./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0019-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8d31f386 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_1.5.800.v20200727-1323.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/memsafety/test-0019-1.i -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 c2707018625c82fb11b0c17a966b82b37a0c8e83 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 09:23:06,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 09:23:06,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 09:23:06,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 09:23:06,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 09:23:06,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 09:23:06,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 09:23:06,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 09:23:06,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 09:23:06,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 09:23:06,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 09:23:06,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 09:23:06,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 09:23:06,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 09:23:06,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 09:23:06,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 09:23:06,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 09:23:06,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 09:23:06,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 09:23:06,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 09:23:06,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 09:23:06,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 09:23:06,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 09:23:06,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 09:23:06,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 09:23:06,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 09:23:06,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 09:23:06,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 09:23:06,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 09:23:06,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 09:23:06,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 09:23:06,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 09:23:06,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 09:23:06,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 09:23:06,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 09:23:06,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 09:23:06,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 09:23:06,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 09:23:06,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 09:23:06,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 09:23:06,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 09:23:06,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-07-06 09:23:06,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 09:23:06,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 09:23:06,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 09:23:06,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 09:23:06,567 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 09:23:06,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 09:23:06,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 09:23:06,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 09:23:06,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 09:23:06,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 09:23:06,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 09:23:06,568 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-07-06 09:23:06,568 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-07-06 09:23:06,569 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-07-06 09:23:06,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 09:23:06,569 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-07-06 09:23:06,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 09:23:06,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 09:23:06,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 09:23:06,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 09:23:06,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 09:23:06,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 09:23:06,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 09:23:06,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 09:23:06,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 09:23:06,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 09:23:06,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 09:23:06,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2707018625c82fb11b0c17a966b82b37a0c8e83 [2021-07-06 09:23:06,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 09:23:06,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 09:23:06,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 09:23:06,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 09:23:06,889 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 09:23:06,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-1.i [2021-07-06 09:23:06,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20786220/f9b82875b8f64a8bad1cdb6438153027/FLAG0308334c6 [2021-07-06 09:23:07,357 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 09:23:07,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-1.i [2021-07-06 09:23:07,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20786220/f9b82875b8f64a8bad1cdb6438153027/FLAG0308334c6 [2021-07-06 09:23:07,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20786220/f9b82875b8f64a8bad1cdb6438153027 [2021-07-06 09:23:07,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 09:23:07,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-06 09:23:07,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 09:23:07,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 09:23:07,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 09:23:07,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c77b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07, skipping insertion in model container [2021-07-06 09:23:07,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 09:23:07,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 09:23:07,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 09:23:07,576 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 09:23:07,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 09:23:07,644 INFO L208 MainTranslator]: Completed translation [2021-07-06 09:23:07,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07 WrapperNode [2021-07-06 09:23:07,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 09:23:07,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 09:23:07,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 09:23:07,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 09:23:07,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 09:23:07,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 09:23:07,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 09:23:07,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 09:23:07,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (1/1) ... [2021-07-06 09:23:07,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 09:23:07,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 09:23:07,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-06 09:23:07,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-06 09:23:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-07-06 09:23:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 09:23:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-07-06 09:23:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-07-06 09:23:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-07-06 09:23:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-07-06 09:23:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-07-06 09:23:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-07-06 09:23:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-07-06 09:23:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-07-06 09:23:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-07-06 09:23:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-07-06 09:23:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-07-06 09:23:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-07-06 09:23:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-07-06 09:23:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-07-06 09:23:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-07-06 09:23:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-07-06 09:23:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-07-06 09:23:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-07-06 09:23:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-07-06 09:23:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-07-06 09:23:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-07-06 09:23:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-07-06 09:23:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 09:23:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-07-06 09:23:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-07-06 09:23:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 09:23:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 09:23:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 09:23:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 09:23:08,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 09:23:08,218 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-06 09:23:08,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 09:23:08 BoogieIcfgContainer [2021-07-06 09:23:08,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 09:23:08,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 09:23:08,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 09:23:08,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 09:23:08,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 09:23:07" (1/3) ... [2021-07-06 09:23:08,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34de85fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 09:23:08, skipping insertion in model container [2021-07-06 09:23:08,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:07" (2/3) ... [2021-07-06 09:23:08,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34de85fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 09:23:08, skipping insertion in model container [2021-07-06 09:23:08,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 09:23:08" (3/3) ... [2021-07-06 09:23:08,228 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-1.i [2021-07-06 09:23:08,233 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 09:23:08,233 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-07-06 09:23:08,268 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr0REQUIRES_VIOLATION ======== [2021-07-06 09:23:08,274 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:08,274 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-06 09:23:08,298 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:08,298 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:08,298 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION] === [2021-07-06 09:23:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1294873083, now seen corresponding path program 1 times [2021-07-06 09:23:08,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:08,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077182360] [2021-07-06 09:23:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:08,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:08,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:08,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:08,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:08,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:08,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:08,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:08,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077182360] [2021-07-06 09:23:08,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077182360] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:08,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:08,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 09:23:08,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602949579] [2021-07-06 09:23:08,539 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 09:23:08,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 09:23:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-06 09:23:08,553 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:08,739 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 09:23:08,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-07-06 09:23:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:08,743 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:08,744 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:08,745 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-07-06 09:23:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:08,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-07-06 09:23:08,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:08,762 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:08,762 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:08,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:08,764 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 09:23:08,764 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:08,766 INFO L303 ceAbstractionStarter]: Result for error location mainErr0REQUIRES_VIOLATION was SAFE (1/23) [2021-07-06 09:23:08,768 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr1REQUIRES_VIOLATION ======== [2021-07-06 09:23:08,769 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:08,769 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-06 09:23:08,771 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:08,771 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:08,771 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION] === [2021-07-06 09:23:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:08,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1294873084, now seen corresponding path program 1 times [2021-07-06 09:23:08,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:08,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882602225] [2021-07-06 09:23:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:08,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:08,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:08,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:08,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:08,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:08,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:08,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:08,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:08,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:08,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:08,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:08,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882602225] [2021-07-06 09:23:08,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882602225] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:08,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:08,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-06 09:23:08,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309931926] [2021-07-06 09:23:08,921 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-06 09:23:08,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:08,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-06 09:23:08,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-07-06 09:23:08,923 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:09,108 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-07-06 09:23:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 09:23:09,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-07-06 09:23:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:09,111 INFO L225 Difference]: With dead ends: 58 [2021-07-06 09:23:09,112 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:09,112 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-07-06 09:23:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:09,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-07-06 09:23:09,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:09,114 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:09,114 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:09,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:09,115 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 09:23:09,115 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:09,115 INFO L303 ceAbstractionStarter]: Result for error location mainErr1REQUIRES_VIOLATION was SAFE (2/23) [2021-07-06 09:23:09,116 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr2REQUIRES_VIOLATION ======== [2021-07-06 09:23:09,118 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:09,118 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-06 09:23:09,125 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:09,125 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:09,125 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION] === [2021-07-06 09:23:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:09,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1486359899, now seen corresponding path program 1 times [2021-07-06 09:23:09,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:09,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625491598] [2021-07-06 09:23:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:09,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:09,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:09,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625491598] [2021-07-06 09:23:09,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625491598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:09,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:09,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:09,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353243120] [2021-07-06 09:23:09,202 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:09,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:09,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:09,203 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:09,299 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-07-06 09:23:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:09,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-07-06 09:23:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:09,300 INFO L225 Difference]: With dead ends: 59 [2021-07-06 09:23:09,300 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:09,301 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:09,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-07-06 09:23:09,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:09,301 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:09,301 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:09,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:09,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:09,302 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-06 09:23:09,302 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:09,302 INFO L303 ceAbstractionStarter]: Result for error location mainErr2REQUIRES_VIOLATION was SAFE (3/23) [2021-07-06 09:23:09,303 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr3REQUIRES_VIOLATION ======== [2021-07-06 09:23:09,304 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:09,304 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-06 09:23:09,308 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:09,308 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:09,308 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION] === [2021-07-06 09:23:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:09,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1486359900, now seen corresponding path program 1 times [2021-07-06 09:23:09,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:09,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813478262] [2021-07-06 09:23:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:09,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:09,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:09,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:09,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:09,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:09,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813478262] [2021-07-06 09:23:09,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813478262] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:09,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:09,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-06 09:23:09,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459478316] [2021-07-06 09:23:09,432 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-06 09:23:09,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:09,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-06 09:23:09,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-07-06 09:23:09,434 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:09,582 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-07-06 09:23:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 09:23:09,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2021-07-06 09:23:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:09,585 INFO L225 Difference]: With dead ends: 58 [2021-07-06 09:23:09,585 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:09,585 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-07-06 09:23:09,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:09,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-07-06 09:23:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:09,586 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:09,586 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:09,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:09,586 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-06 09:23:09,586 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:09,587 INFO L303 ceAbstractionStarter]: Result for error location mainErr3REQUIRES_VIOLATION was SAFE (4/23) [2021-07-06 09:23:09,588 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr4ENSURES_VIOLATIONMEMORY_LEAK ======== [2021-07-06 09:23:09,589 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:09,589 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-07-06 09:23:09,593 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:09,593 INFO L525 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] [2021-07-06 09:23:09,593 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr4ENSURES_VIOLATIONMEMORY_LEAK] === [2021-07-06 09:23:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:09,594 INFO L82 PathProgramCache]: Analyzing trace with hash 757075304, now seen corresponding path program 1 times [2021-07-06 09:23:09,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:09,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100529225] [2021-07-06 09:23:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:09,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:09,649 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-07-06 09:23:09,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:09,657 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-07-06 09:23:09,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 09:23:09,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 09:23:09,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 09:23:09,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 09:23:09,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-06 09:23:09,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-07-06 09:23:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:09,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:09,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:09,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-06 09:23:09,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 09:23:09,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 09:23:09,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:09,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:09,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:09,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:09,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:09,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100529225] [2021-07-06 09:23:09,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100529225] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:09,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:09,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-06 09:23:09,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307176257] [2021-07-06 09:23:09,908 INFO L425 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-06 09:23:09,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:09,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-06 09:23:09,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-06 09:23:09,909 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-07-06 09:23:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:10,491 INFO L93 Difference]: Finished difference Result 62 states and 61 transitions. [2021-07-06 09:23:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-06 09:23:10,492 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-07-06 09:23:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:10,494 INFO L225 Difference]: With dead ends: 62 [2021-07-06 09:23:10,494 INFO L226 Difference]: Without dead ends: 35 [2021-07-06 09:23:10,494 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 397.8ms TimeCoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-07-06 09:23:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-07-06 09:23:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-07-06 09:23:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.0) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-07-06 09:23:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2021-07-06 09:23:10,501 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 28 [2021-07-06 09:23:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:10,501 INFO L442 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2021-07-06 09:23:10,502 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-07-06 09:23:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2021-07-06 09:23:10,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-07-06 09:23:10,502 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:10,502 INFO L525 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] [2021-07-06 09:23:10,502 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-06 09:23:10,503 INFO L374 AbstractCegarLoop]: === Iteration 2 === [mainErr4ENSURES_VIOLATIONMEMORY_LEAK] === [2021-07-06 09:23:10,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:10,503 INFO L82 PathProgramCache]: Analyzing trace with hash 17891823, now seen corresponding path program 1 times [2021-07-06 09:23:10,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:10,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748099164] [2021-07-06 09:23:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:10,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:10,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:10,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:10,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-06 09:23:10,650 INFO L142 QuantifierPusher]: treesize reduction 31, result has 96.5 percent of original size [2021-07-06 09:23:10,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 852 [2021-07-06 09:23:10,707 INFO L142 QuantifierPusher]: treesize reduction 27, result has 96.3 percent of original size [2021-07-06 09:23:10,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 708 [2021-07-06 09:23:10,760 INFO L142 QuantifierPusher]: treesize reduction 7, result has 98.6 percent of original size [2021-07-06 09:23:10,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 492 [2021-07-06 09:23:10,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-06 09:23:10,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:10,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:10,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:10,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-07-06 09:23:10,906 INFO L142 QuantifierPusher]: treesize reduction 4, result has 95.5 percent of original size [2021-07-06 09:23:10,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-07-06 09:23:10,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-07-06 09:23:10,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:10,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-07-06 09:23:11,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-07-06 09:23:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:11,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:11,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-06 09:23:11,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:11,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-06 09:23:11,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:11,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-07-06 09:23:11,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:11,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-06 09:23:11,176 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.0 percent of original size [2021-07-06 09:23:11,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-07-06 09:23:11,220 INFO L142 QuantifierPusher]: treesize reduction 30, result has 55.9 percent of original size [2021-07-06 09:23:11,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-06 09:23:11,271 INFO L142 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-07-06 09:23:11,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-07-06 09:23:11,336 INFO L142 QuantifierPusher]: treesize reduction 29, result has 73.1 percent of original size [2021-07-06 09:23:11,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-07-06 09:23:11,418 INFO L142 QuantifierPusher]: treesize reduction 29, result has 73.1 percent of original size [2021-07-06 09:23:11,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-07-06 09:23:11,510 INFO L142 QuantifierPusher]: treesize reduction 30, result has 72.2 percent of original size [2021-07-06 09:23:11,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-07-06 09:23:11,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:11,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-07-06 09:23:11,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:11,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-07-06 09:23:11,781 INFO L142 QuantifierPusher]: treesize reduction 11, result has 93.5 percent of original size [2021-07-06 09:23:11,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-07-06 09:23:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:11,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:11,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748099164] [2021-07-06 09:23:11,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748099164] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:11,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:11,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-07-06 09:23:11,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888012940] [2021-07-06 09:23:11,842 INFO L425 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-06 09:23:11,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:11,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-06 09:23:11,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2021-07-06 09:23:11,842 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand has 27 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-07-06 09:23:12,906 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-07-06 09:23:13,075 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2021-07-06 09:23:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:13,272 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2021-07-06 09:23:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-06 09:23:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-07-06 09:23:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:13,273 INFO L225 Difference]: With dead ends: 34 [2021-07-06 09:23:13,273 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:13,274 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2021.0ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-07-06 09:23:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:13,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-07-06 09:23:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:13,274 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:13,275 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 27 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-07-06 09:23:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:13,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:13,275 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-06 09:23:13,275 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:13,275 INFO L303 ceAbstractionStarter]: Result for error location mainErr4ENSURES_VIOLATIONMEMORY_LEAK was SAFE (5/23) [2021-07-06 09:23:13,276 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == alloc_dataErr0REQUIRES_VIOLATION ======== [2021-07-06 09:23:13,276 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:13,276 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-06 09:23:13,277 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:13,278 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:13,278 INFO L374 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr0REQUIRES_VIOLATION] === [2021-07-06 09:23:13,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:13,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1836009294, now seen corresponding path program 1 times [2021-07-06 09:23:13,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:13,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221098767] [2021-07-06 09:23:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:13,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:13,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:13,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:13,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:13,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221098767] [2021-07-06 09:23:13,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221098767] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:13,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:13,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 09:23:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978855017] [2021-07-06 09:23:13,318 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 09:23:13,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 09:23:13,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:13,319 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:13,461 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 09:23:13,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-07-06 09:23:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:13,462 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:13,462 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:13,463 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-06 09:23:13,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:13,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-07-06 09:23:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:13,464 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:13,464 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:13,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:13,464 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-06 09:23:13,465 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:13,465 INFO L303 ceAbstractionStarter]: Result for error location alloc_dataErr0REQUIRES_VIOLATION was SAFE (6/23) [2021-07-06 09:23:13,466 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == alloc_dataErr1REQUIRES_VIOLATION ======== [2021-07-06 09:23:13,466 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:13,466 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-06 09:23:13,467 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:13,468 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:13,468 INFO L374 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr1REQUIRES_VIOLATION] === [2021-07-06 09:23:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1836009295, now seen corresponding path program 1 times [2021-07-06 09:23:13,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:13,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298121194] [2021-07-06 09:23:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:13,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:13,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:13,491 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-07-06 09:23:13,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:13,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:13,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298121194] [2021-07-06 09:23:13,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298121194] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:13,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:13,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 09:23:13,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453284032] [2021-07-06 09:23:13,512 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 09:23:13,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:13,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 09:23:13,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:13,513 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:13,627 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-07-06 09:23:13,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 09:23:13,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-07-06 09:23:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:13,628 INFO L225 Difference]: With dead ends: 55 [2021-07-06 09:23:13,628 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:13,628 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-06 09:23:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:13,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-07-06 09:23:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:13,629 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:13,629 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:13,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:13,630 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-06 09:23:13,630 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:13,630 INFO L303 ceAbstractionStarter]: Result for error location alloc_dataErr1REQUIRES_VIOLATION was SAFE (7/23) [2021-07-06 09:23:13,631 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == alloc_dataErr2REQUIRES_VIOLATION ======== [2021-07-06 09:23:13,631 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:13,631 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 09:23:13,632 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:13,632 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:13,632 INFO L374 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr2REQUIRES_VIOLATION] === [2021-07-06 09:23:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:13,632 INFO L82 PathProgramCache]: Analyzing trace with hash -826627089, now seen corresponding path program 1 times [2021-07-06 09:23:13,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:13,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376703382] [2021-07-06 09:23:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:13,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:13,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:13,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:13,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376703382] [2021-07-06 09:23:13,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376703382] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:13,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:13,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 09:23:13,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162341879] [2021-07-06 09:23:13,665 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 09:23:13,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 09:23:13,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:13,666 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:13,724 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-07-06 09:23:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-07-06 09:23:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:13,725 INFO L225 Difference]: With dead ends: 59 [2021-07-06 09:23:13,725 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:13,725 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:13,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 09:23:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:13,726 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:13,726 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:13,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:13,726 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-06 09:23:13,726 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:13,726 INFO L303 ceAbstractionStarter]: Result for error location alloc_dataErr2REQUIRES_VIOLATION was SAFE (8/23) [2021-07-06 09:23:13,727 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == alloc_dataErr3REQUIRES_VIOLATION ======== [2021-07-06 09:23:13,727 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:13,727 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 09:23:13,728 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:13,728 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:13,728 INFO L374 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr3REQUIRES_VIOLATION] === [2021-07-06 09:23:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:13,729 INFO L82 PathProgramCache]: Analyzing trace with hash -826627088, now seen corresponding path program 1 times [2021-07-06 09:23:13,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:13,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060263633] [2021-07-06 09:23:13,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:13,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:13,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:13,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:13,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:13,777 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-07-06 09:23:13,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:13,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:13,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060263633] [2021-07-06 09:23:13,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060263633] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:13,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:13,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 09:23:13,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467236483] [2021-07-06 09:23:13,802 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 09:23:13,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:13,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 09:23:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-06 09:23:13,803 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:13,916 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-07-06 09:23:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 09:23:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-07-06 09:23:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:13,917 INFO L225 Difference]: With dead ends: 52 [2021-07-06 09:23:13,917 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:13,917 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-06 09:23:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:13,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 09:23:13,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:13,918 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:13,918 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:13,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:13,918 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-06 09:23:13,918 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:13,918 INFO L303 ceAbstractionStarter]: Result for error location alloc_dataErr3REQUIRES_VIOLATION was SAFE (9/23) [2021-07-06 09:23:13,919 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr0REQUIRES_VIOLATION ======== [2021-07-06 09:23:13,919 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:13,919 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-06 09:23:13,920 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:13,920 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:13,920 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr0REQUIRES_VIOLATION] === [2021-07-06 09:23:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:13,921 INFO L82 PathProgramCache]: Analyzing trace with hash -965025291, now seen corresponding path program 1 times [2021-07-06 09:23:13,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:13,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890439234] [2021-07-06 09:23:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:13,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:13,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:13,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:13,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:13,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890439234] [2021-07-06 09:23:13,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890439234] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:13,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:13,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:13,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539344848] [2021-07-06 09:23:13,980 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:13,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:13,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:13,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:13,981 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:14,065 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:14,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:14,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-07-06 09:23:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:14,066 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:14,066 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:14,066 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:14,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-07-06 09:23:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:14,067 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:14,067 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:14,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:14,067 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-06 09:23:14,067 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:14,067 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr0REQUIRES_VIOLATION was SAFE (10/23) [2021-07-06 09:23:14,068 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr1REQUIRES_VIOLATION ======== [2021-07-06 09:23:14,068 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:14,068 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-06 09:23:14,069 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:14,069 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:14,069 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr1REQUIRES_VIOLATION] === [2021-07-06 09:23:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash -965025290, now seen corresponding path program 1 times [2021-07-06 09:23:14,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:14,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18109720] [2021-07-06 09:23:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:14,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:14,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:14,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18109720] [2021-07-06 09:23:14,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18109720] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:14,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:14,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:14,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009602981] [2021-07-06 09:23:14,119 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:14,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:14,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:14,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:14,120 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:14,206 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:14,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-07-06 09:23:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:14,207 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:14,207 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:14,207 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:14,207 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-07-06 09:23:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:14,207 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:14,208 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:14,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:14,208 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-06 09:23:14,208 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:14,208 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr1REQUIRES_VIOLATION was SAFE (11/23) [2021-07-06 09:23:14,209 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr2REQUIRES_VIOLATION ======== [2021-07-06 09:23:14,209 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:14,209 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-06 09:23:14,210 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:14,210 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:14,210 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr2REQUIRES_VIOLATION] === [2021-07-06 09:23:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:14,211 INFO L82 PathProgramCache]: Analyzing trace with hash 148987061, now seen corresponding path program 1 times [2021-07-06 09:23:14,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:14,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546867333] [2021-07-06 09:23:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:14,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:14,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:14,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546867333] [2021-07-06 09:23:14,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546867333] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:14,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:14,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:14,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868874823] [2021-07-06 09:23:14,249 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:14,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:14,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:14,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:14,250 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:14,332 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:14,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-07-06 09:23:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:14,333 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:14,333 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:14,334 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:14,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-07-06 09:23:14,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:14,334 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:14,334 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:14,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:14,335 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-06 09:23:14,335 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:14,335 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr2REQUIRES_VIOLATION was SAFE (12/23) [2021-07-06 09:23:14,336 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr3REQUIRES_VIOLATION ======== [2021-07-06 09:23:14,336 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:14,336 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:14,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-06 09:23:14,337 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:14,337 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:14,337 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr3REQUIRES_VIOLATION] === [2021-07-06 09:23:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash 148987062, now seen corresponding path program 1 times [2021-07-06 09:23:14,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:14,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704502035] [2021-07-06 09:23:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:14,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:14,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:14,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704502035] [2021-07-06 09:23:14,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704502035] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:14,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:14,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:14,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950060699] [2021-07-06 09:23:14,386 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:14,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:14,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:14,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:14,387 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:14,469 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-07-06 09:23:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:14,469 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:14,469 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:14,470 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:14,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-07-06 09:23:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:14,470 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:14,470 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:14,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:14,470 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-06 09:23:14,471 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:14,471 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr3REQUIRES_VIOLATION was SAFE (13/23) [2021-07-06 09:23:14,471 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr4REQUIRES_VIOLATION ======== [2021-07-06 09:23:14,472 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:14,472 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-06 09:23:14,473 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:14,473 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:14,473 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr4REQUIRES_VIOLATION] === [2021-07-06 09:23:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash 323631608, now seen corresponding path program 1 times [2021-07-06 09:23:14,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:14,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35124886] [2021-07-06 09:23:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:14,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:14,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:14,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35124886] [2021-07-06 09:23:14,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35124886] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:14,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:14,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:14,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338020938] [2021-07-06 09:23:14,516 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:14,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:14,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:14,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:14,517 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:14,607 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-07-06 09:23:14,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:14,607 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:14,607 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:14,608 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:14,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-07-06 09:23:14,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:14,608 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:14,608 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:14,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:14,608 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-06 09:23:14,608 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:14,609 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr4REQUIRES_VIOLATION was SAFE (14/23) [2021-07-06 09:23:14,609 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr5REQUIRES_VIOLATION ======== [2021-07-06 09:23:14,610 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:14,610 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:14,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-06 09:23:14,610 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:14,611 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:14,611 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr5REQUIRES_VIOLATION] === [2021-07-06 09:23:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash 323631609, now seen corresponding path program 1 times [2021-07-06 09:23:14,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:14,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909953733] [2021-07-06 09:23:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:14,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:14,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:14,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:14,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909953733] [2021-07-06 09:23:14,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909953733] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:14,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:14,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 09:23:14,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682963155] [2021-07-06 09:23:14,655 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 09:23:14,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:14,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 09:23:14,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,656 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:14,759 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-07-06 09:23:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:14,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-07-06 09:23:14,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:14,759 INFO L225 Difference]: With dead ends: 58 [2021-07-06 09:23:14,759 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:14,760 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-06 09:23:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:14,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-07-06 09:23:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:14,760 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:14,760 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:14,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:14,760 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-06 09:23:14,761 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:14,761 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr5REQUIRES_VIOLATION was SAFE (15/23) [2021-07-06 09:23:14,761 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr6REQUIRES_VIOLATION ======== [2021-07-06 09:23:14,761 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:14,761 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-06 09:23:14,762 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:14,763 INFO L525 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] [2021-07-06 09:23:14,763 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr6REQUIRES_VIOLATION] === [2021-07-06 09:23:14,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:14,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1772330489, now seen corresponding path program 1 times [2021-07-06 09:23:14,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:14,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103121799] [2021-07-06 09:23:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:14,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:14,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:14,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103121799] [2021-07-06 09:23:14,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103121799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:14,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:14,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:14,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785076600] [2021-07-06 09:23:14,801 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:14,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:14,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:14,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:14,802 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:14,884 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-07-06 09:23:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:14,885 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:14,885 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:14,885 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:14,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-07-06 09:23:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:14,885 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:14,885 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:14,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:14,886 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-06 09:23:14,886 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:14,886 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr6REQUIRES_VIOLATION was SAFE (16/23) [2021-07-06 09:23:14,887 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr7REQUIRES_VIOLATION ======== [2021-07-06 09:23:14,887 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:14,887 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-06 09:23:14,888 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:14,888 INFO L525 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] [2021-07-06 09:23:14,888 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr7REQUIRES_VIOLATION] === [2021-07-06 09:23:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:14,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1772330490, now seen corresponding path program 1 times [2021-07-06 09:23:14,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:14,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826754507] [2021-07-06 09:23:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:14,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:14,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:14,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:14,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:14,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:14,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826754507] [2021-07-06 09:23:14,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826754507] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:14,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:14,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 09:23:14,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805259922] [2021-07-06 09:23:14,950 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 09:23:14,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:14,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 09:23:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:14,951 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:15,031 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-07-06 09:23:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-07-06 09:23:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:15,032 INFO L225 Difference]: With dead ends: 56 [2021-07-06 09:23:15,032 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:15,032 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-06 09:23:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:15,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:15,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:15,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-07-06 09:23:15,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:15,032 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:15,032 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:15,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:15,032 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-06 09:23:15,033 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:15,033 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr7REQUIRES_VIOLATION was SAFE (17/23) [2021-07-06 09:23:15,033 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr8ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:15,033 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:15,033 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-06 09:23:15,034 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:15,034 INFO L525 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] [2021-07-06 09:23:15,034 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr8ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:15,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1464648059, now seen corresponding path program 1 times [2021-07-06 09:23:15,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:15,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470222681] [2021-07-06 09:23:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:15,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:15,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:15,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:15,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:15,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 09:23:15,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:15,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:15,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:15,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 09:23:15,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:15,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-06 09:23:15,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:15,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:15,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470222681] [2021-07-06 09:23:15,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470222681] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:15,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:15,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 09:23:15,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842771900] [2021-07-06 09:23:15,174 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 09:23:15,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:15,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 09:23:15,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-07-06 09:23:15,175 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:15,436 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-07-06 09:23:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-06 09:23:15,437 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-07-06 09:23:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:15,438 INFO L225 Difference]: With dead ends: 59 [2021-07-06 09:23:15,438 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:15,438 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 165.4ms TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-07-06 09:23:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:15,439 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-07-06 09:23:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:15,439 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:15,439 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:15,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:15,440 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-06 09:23:15,440 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:15,440 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE was SAFE (18/23) [2021-07-06 09:23:15,441 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr9ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:15,441 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:15,441 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-07-06 09:23:15,442 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:15,442 INFO L525 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] [2021-07-06 09:23:15,442 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr9ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:15,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1840550339, now seen corresponding path program 1 times [2021-07-06 09:23:15,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:15,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765016431] [2021-07-06 09:23:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:15,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:15,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:15,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:15,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:15,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:15,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:15,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:15,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 09:23:15,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 09:23:15,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-06 09:23:15,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:15,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:15,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765016431] [2021-07-06 09:23:15,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765016431] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:15,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:15,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 09:23:15,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948999377] [2021-07-06 09:23:15,595 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 09:23:15,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:15,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 09:23:15,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-07-06 09:23:15,595 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:15,880 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-07-06 09:23:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-06 09:23:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-07-06 09:23:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:15,882 INFO L225 Difference]: With dead ends: 59 [2021-07-06 09:23:15,882 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:15,882 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 179.8ms TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-07-06 09:23:15,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:15,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:15,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:15,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-07-06 09:23:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:15,883 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:15,883 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:15,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:15,884 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-06 09:23:15,884 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:15,884 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE was SAFE (19/23) [2021-07-06 09:23:15,885 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr10ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:15,885 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:15,885 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-06 09:23:15,887 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:15,887 INFO L525 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] [2021-07-06 09:23:15,887 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr10ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1222485571, now seen corresponding path program 1 times [2021-07-06 09:23:15,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:15,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517178041] [2021-07-06 09:23:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:15,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:15,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:15,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:15,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:15,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:15,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-07-06 09:23:15,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-06 09:23:15,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-06 09:23:15,955 INFO L142 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size [2021-07-06 09:23:15,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-06 09:23:15,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:15,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:15,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:16,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 09:23:16,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 09:23:16,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-06 09:23:16,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:16,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:16,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517178041] [2021-07-06 09:23:16,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517178041] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:16,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:16,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 09:23:16,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568592254] [2021-07-06 09:23:16,050 INFO L425 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-06 09:23:16,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:16,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-06 09:23:16,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-07-06 09:23:16,051 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:16,378 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-07-06 09:23:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-06 09:23:16,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-07-06 09:23:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:16,379 INFO L225 Difference]: With dead ends: 59 [2021-07-06 09:23:16,379 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:16,379 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 195.0ms TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-07-06 09:23:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:16,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:16,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-07-06 09:23:16,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:16,380 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:16,380 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-07-06 09:23:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:16,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:16,380 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-06 09:23:16,380 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:16,381 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr10ASSERT_VIOLATIONMEMORY_FREE was SAFE (20/23) [2021-07-06 09:23:16,381 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr11ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:16,381 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:16,382 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-07-06 09:23:16,382 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:16,393 INFO L525 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] [2021-07-06 09:23:16,393 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr11ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:16,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:16,394 INFO L82 PathProgramCache]: Analyzing trace with hash 757653055, now seen corresponding path program 1 times [2021-07-06 09:23:16,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:16,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091172753] [2021-07-06 09:23:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:16,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:16,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:16,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:16,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-07-06 09:23:16,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 09:23:16,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:16,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:16,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:16,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:16,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:16,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:16,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:16,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 09:23:16,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:16,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:16,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091172753] [2021-07-06 09:23:16,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091172753] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:16,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:16,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 09:23:16,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498779898] [2021-07-06 09:23:16,512 INFO L425 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-06 09:23:16,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:16,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-06 09:23:16,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-07-06 09:23:16,513 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 14 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:16,773 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-07-06 09:23:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 09:23:16,773 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-07-06 09:23:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:16,773 INFO L225 Difference]: With dead ends: 59 [2021-07-06 09:23:16,774 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:16,774 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 171.1ms TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-07-06 09:23:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:16,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-07-06 09:23:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:16,774 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:16,774 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:16,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:16,775 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-06 09:23:16,775 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:16,775 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr11ASSERT_VIOLATIONMEMORY_FREE was SAFE (21/23) [2021-07-06 09:23:16,775 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr12ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:16,776 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:16,776 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-07-06 09:23:16,776 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:16,776 INFO L525 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] [2021-07-06 09:23:16,776 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr12ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:16,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2012408319, now seen corresponding path program 1 times [2021-07-06 09:23:16,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:16,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648380893] [2021-07-06 09:23:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:16,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:16,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:16,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:16,799 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-07-06 09:23:16,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:16,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:16,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:16,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:16,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:16,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:16,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:16,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:16,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 09:23:16,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:16,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:16,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:16,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648380893] [2021-07-06 09:23:16,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648380893] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:16,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:16,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 09:23:16,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748242990] [2021-07-06 09:23:16,901 INFO L425 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-06 09:23:16,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:16,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-06 09:23:16,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-07-06 09:23:16,902 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:17,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:17,199 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-07-06 09:23:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 09:23:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-07-06 09:23:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:17,200 INFO L225 Difference]: With dead ends: 59 [2021-07-06 09:23:17,200 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:17,200 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 206.0ms TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-07-06 09:23:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:17,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-07-06 09:23:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:17,201 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:17,201 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:17,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:17,201 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-06 09:23:17,201 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:17,201 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr12ASSERT_VIOLATIONMEMORY_FREE was SAFE (22/23) [2021-07-06 09:23:17,202 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == free_dataErr13ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:17,202 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:17,202 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 09:23:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-07-06 09:23:17,203 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:17,203 INFO L525 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] [2021-07-06 09:23:17,203 INFO L374 AbstractCegarLoop]: === Iteration 1 === [free_dataErr13ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:17,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:17,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2039851455, now seen corresponding path program 1 times [2021-07-06 09:23:17,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:17,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59873127] [2021-07-06 09:23:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:17,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:17,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:17,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:17,233 INFO L142 QuantifierPusher]: treesize reduction 14, result has 57.6 percent of original size [2021-07-06 09:23:17,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-06 09:23:17,252 INFO L142 QuantifierPusher]: treesize reduction 14, result has 51.7 percent of original size [2021-07-06 09:23:17,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-06 09:23:17,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:17,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:17,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:17,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-06 09:23:17,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-06 09:23:17,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-06 09:23:17,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-06 09:23:17,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 09:23:17,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 09:23:17,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 09:23:17,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 09:23:17,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:17,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 09:23:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:17,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 09:23:17,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:17,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-06 09:23:17,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:17,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-06 09:23:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:17,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:17,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59873127] [2021-07-06 09:23:17,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59873127] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:17,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:17,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-07-06 09:23:17,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053740875] [2021-07-06 09:23:17,502 INFO L425 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-06 09:23:17,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:17,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-06 09:23:17,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2021-07-06 09:23:17,503 INFO L87 Difference]: Start difference. First operand has 60 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:18,219 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-07-06 09:23:18,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-06 09:23:18,220 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-07-06 09:23:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:18,220 INFO L225 Difference]: With dead ends: 60 [2021-07-06 09:23:18,220 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:18,220 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 612.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2021-07-06 09:23:18,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:18,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-07-06 09:23:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:18,221 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:18,221 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:18,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:18,221 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-06 09:23:18,221 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:18,221 INFO L303 ceAbstractionStarter]: Result for error location free_dataErr13ASSERT_VIOLATIONMEMORY_FREE was SAFE (23/23) [2021-07-06 09:23:18,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 09:23:18 BoogieIcfgContainer [2021-07-06 09:23:18,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 09:23:18,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 09:23:18,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 09:23:18,226 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 09:23:18,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 09:23:08" (3/4) ... [2021-07-06 09:23:18,228 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 09:23:18,234 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_data [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-07-06 09:23:18,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_data [2021-07-06 09:23:18,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-07-06 09:23:18,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-07-06 09:23:18,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-07-06 09:23:18,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 09:23:18,264 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 09:23:18,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 09:23:18,265 INFO L168 Benchmark]: Toolchain (without parser) took 10887.70 ms. Allocated memory was 69.2 MB in the beginning and 176.2 MB in the end (delta: 107.0 MB). Free memory was 49.1 MB in the beginning and 65.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 90.0 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:18,265 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 09:23:18,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.71 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 39.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:18,265 INFO L168 Benchmark]: Boogie Preprocessor took 51.72 ms. Allocated memory is still 69.2 MB. Free memory was 39.7 MB in the beginning and 37.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:18,265 INFO L168 Benchmark]: RCFGBuilder took 521.03 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 37.1 MB in the beginning and 43.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:18,265 INFO L168 Benchmark]: TraceAbstraction took 10004.22 ms. Allocated memory was 83.9 MB in the beginning and 176.2 MB in the end (delta: 92.3 MB). Free memory was 43.2 MB in the beginning and 69.1 MB in the end (delta: -25.9 MB). Peak memory consumption was 65.2 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:18,265 INFO L168 Benchmark]: Witness Printer took 38.76 ms. Allocated memory is still 176.2 MB. Free memory was 69.1 MB in the beginning and 65.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:18,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.71 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 39.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.72 ms. Allocated memory is still 69.2 MB. Free memory was 39.7 MB in the beginning and 37.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 521.03 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 37.1 MB in the beginning and 43.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10004.22 ms. Allocated memory was 83.9 MB in the beginning and 176.2 MB in the end (delta: 92.3 MB). Free memory was 43.2 MB in the beginning and 69.1 MB in the end (delta: -25.9 MB). Peak memory consumption was 65.2 MB. Max. memory is 16.1 GB. * Witness Printer took 38.76 ms. Allocated memory is still 176.2 MB. Free memory was 69.1 MB in the beginning and 65.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 499.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 13.2ms, AutomataDifference: 201.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 11 SDslu, 108 SDs, 0 SdLazy, 157 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.3ms SsaConstructionTime, 50.6ms SatisfiabilityAnalysisTime, 107.9ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 70 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr1REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 347.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 190.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 20 SDslu, 173 SDs, 0 SdLazy, 152 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 120.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5ms SsaConstructionTime, 9.9ms SatisfiabilityAnalysisTime, 133.0ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr2REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 185.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 98.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 2 SDslu, 49 SDs, 0 SdLazy, 122 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2ms SsaConstructionTime, 10.7ms SatisfiabilityAnalysisTime, 56.4ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr3REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 283.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.9ms, AutomataDifference: 153.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 19 SDslu, 173 SDs, 0 SdLazy, 152 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 101.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2ms SsaConstructionTime, 12.7ms SatisfiabilityAnalysisTime, 104.6ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr4ENSURES_VIOLATIONMEMORY_LEAK CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 3687.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.9ms, AutomataDifference: 2017.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 119 SDslu, 313 SDs, 0 SdLazy, 1208 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 613.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2418.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.5ms SsaConstructionTime, 38.4ms SatisfiabilityAnalysisTime, 1601.3ms InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: alloc_dataErr0REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 188.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 144.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 14 SDslu, 74 SDs, 0 SdLazy, 139 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6ms SsaConstructionTime, 2.0ms SatisfiabilityAnalysisTime, 33.9ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: alloc_dataErr1REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 164.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 115.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 10 SDslu, 75 SDs, 0 SdLazy, 138 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8ms SsaConstructionTime, 2.3ms SatisfiabilityAnalysisTime, 36.7ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: alloc_dataErr2REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 95.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 59.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 52 SDtfs, 3 SDslu, 32 SDs, 0 SdLazy, 84 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6ms SsaConstructionTime, 1.9ms SatisfiabilityAnalysisTime, 26.9ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: alloc_dataErr3REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 191.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 114.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 10 SDslu, 74 SDs, 0 SdLazy, 125 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6ms SsaConstructionTime, 2.7ms SatisfiabilityAnalysisTime, 67.0ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr0REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 148.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 85.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 16 SDslu, 44 SDs, 0 SdLazy, 114 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.9ms SsaConstructionTime, 16.3ms SatisfiabilityAnalysisTime, 35.7ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr1REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 140.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 87.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 22 SDslu, 43 SDs, 0 SdLazy, 108 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 3.1ms SatisfiabilityAnalysisTime, 42.5ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr2REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 126.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 83.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 15 SDslu, 44 SDs, 0 SdLazy, 114 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 2.9ms SatisfiabilityAnalysisTime, 31.7ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr3REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 134.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 83.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 21 SDslu, 43 SDs, 0 SdLazy, 108 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 3.3ms SatisfiabilityAnalysisTime, 40.8ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 73 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr4REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 137.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 91.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 14 SDslu, 44 SDs, 0 SdLazy, 114 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 2.9ms SatisfiabilityAnalysisTime, 35.9ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr5REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 151.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.4ms, AutomataDifference: 104.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 46 SDslu, 52 SDs, 0 SdLazy, 105 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 38.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 2.9ms SatisfiabilityAnalysisTime, 38.1ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr6REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 124.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.8ms, AutomataDifference: 83.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 12 SDslu, 44 SDs, 0 SdLazy, 114 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 3.0ms SatisfiabilityAnalysisTime, 31.5ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr7REQUIRES_VIOLATION CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 146.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 81.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 40 SDslu, 52 SDs, 0 SdLazy, 99 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 3.1ms SatisfiabilityAnalysisTime, 51.0ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr8ASSERT_VIOLATIONMEMORY_FREE CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 406.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 264.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 76 SDslu, 198 SDs, 0 SdLazy, 370 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 165.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 3.3ms SatisfiabilityAnalysisTime, 131.5ms InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr9ASSERT_VIOLATIONMEMORY_FREE CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 443.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 287.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 75 SDslu, 162 SDs, 0 SdLazy, 411 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 179.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 4.2ms SatisfiabilityAnalysisTime, 143.7ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr10ASSERT_VIOLATIONMEMORY_FREE CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 495.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 328.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 52 SDslu, 175 SDs, 0 SdLazy, 458 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 179.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 195.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 6.0ms SatisfiabilityAnalysisTime, 151.0ms InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr11ASSERT_VIOLATIONMEMORY_FREE CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 393.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.5ms, AutomataDifference: 261.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 70 SDslu, 196 SDs, 0 SdLazy, 334 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 171.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4ms SsaConstructionTime, 8.7ms SatisfiabilityAnalysisTime, 105.8ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr12ASSERT_VIOLATIONMEMORY_FREE CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 425.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.4ms, AutomataDifference: 298.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 69 SDslu, 192 SDs, 0 SdLazy, 391 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 134.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 206.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 5.7ms SatisfiabilityAnalysisTime, 115.3ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: free_dataErr13ASSERT_VIOLATIONMEMORY_FREE CFG has 11 procedures, 78 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 1019.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.4ms, AutomataDifference: 717.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 100 SDslu, 171 SDs, 0 SdLazy, 776 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 269.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 612.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5ms SsaConstructionTime, 6.6ms SatisfiabilityAnalysisTime, 287.3ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 366 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 23 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-07-06 09:23:18,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...