./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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 0.1.25-906a4fb [2020-10-19 18:00:42,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:00:42,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:00:42,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:00:42,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:00:42,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:00:42,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:00:42,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:00:42,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:00:42,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:00:42,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:00:42,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:00:42,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:00:42,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:00:42,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:00:42,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:00:42,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:00:42,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:00:42,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:00:42,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:00:42,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:00:42,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:00:42,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:00:42,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:00:42,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:00:42,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:00:42,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:00:42,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:00:42,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:00:42,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:00:42,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:00:42,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:00:42,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:00:42,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:00:42,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:00:42,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:00:42,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:00:42,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:00:42,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:00:42,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:00:42,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:00:42,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:00:42,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:00:42,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:00:42,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:00:42,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:00:42,670 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:00:42,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:00:42,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:00:42,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:00:42,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:00:42,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:00:42,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:00:42,675 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:00:42,675 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:00:42,675 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:00:42,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:00:42,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:00:42,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:00:42,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:00:42,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:00:42,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:00:42,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:00:42,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:00:42,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:00:42,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:00:42,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:00:42,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:00:42,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:00:42,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:00:42,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2707018625c82fb11b0c17a966b82b37a0c8e83 [2020-10-19 18:00:43,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:00:43,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:00:43,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:00:43,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:00:43,054 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:00:43,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-1.i [2020-10-19 18:00:43,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d511f430e/d549384d93a5459ba1f4afffa598a9ea/FLAG2f1c0d3fb [2020-10-19 18:00:43,556 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:00:43,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-1.i [2020-10-19 18:00:43,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d511f430e/d549384d93a5459ba1f4afffa598a9ea/FLAG2f1c0d3fb [2020-10-19 18:00:43,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d511f430e/d549384d93a5459ba1f4afffa598a9ea [2020-10-19 18:00:43,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:00:43,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:00:43,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:00:43,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:00:43,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:00:43,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:00:43" (1/1) ... [2020-10-19 18:00:43,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f75162a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:43, skipping insertion in model container [2020-10-19 18:00:43,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:00:43" (1/1) ... [2020-10-19 18:00:43,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:00:43,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:00:44,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:00:44,268 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:00:44,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:00:44,445 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:00:44,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44 WrapperNode [2020-10-19 18:00:44,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:00:44,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:00:44,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:00:44,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:00:44,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... [2020-10-19 18:00:44,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... [2020-10-19 18:00:44,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... [2020-10-19 18:00:44,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... [2020-10-19 18:00:44,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... [2020-10-19 18:00:44,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... [2020-10-19 18:00:44,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... [2020-10-19 18:00:44,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:00:44,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:00:44,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:00:44,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:00:44,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:00:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:00:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:00:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:00:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:00:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:00:44,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:00:44,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:00:44,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:00:44,584 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2020-10-19 18:00:44,584 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2020-10-19 18:00:44,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:00:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:00:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:00:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:00:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:00:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:00:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:00:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:00:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:00:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:00:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:00:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:00:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:00:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:00:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:00:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:00:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:00:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:00:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:00:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:00:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:00:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:00:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:00:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:00:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:00:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:00:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:00:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:00:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:00:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:00:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:00:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:00:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:00:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:00:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:00:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:00:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:00:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:00:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:00:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:00:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:00:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:00:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:00:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:00:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:00:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:00:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:00:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:00:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:00:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:00:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:00:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:00:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:00:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:00:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:00:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:00:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:00:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:00:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:00:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:00:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:00:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:00:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:00:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:00:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:00:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:00:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:00:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:00:44,602 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:00:44,602 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:00:44,602 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:00:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:00:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:00:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:00:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:00:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:00:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:00:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:00:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:00:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:00:44,607 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:00:44,607 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:00:44,607 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:00:44,607 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:00:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:00:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:00:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:00:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:00:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:00:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2020-10-19 18:00:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:00:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2020-10-19 18:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:00:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:00:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:00:45,232 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:00:45,232 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:00:45,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:00:45 BoogieIcfgContainer [2020-10-19 18:00:45,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:00:45,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:00:45,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:00:45,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:00:45,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:00:43" (1/3) ... [2020-10-19 18:00:45,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e90a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:00:45, skipping insertion in model container [2020-10-19 18:00:45,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:44" (2/3) ... [2020-10-19 18:00:45,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e90a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:00:45, skipping insertion in model container [2020-10-19 18:00:45,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:00:45" (3/3) ... [2020-10-19 18:00:45,251 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-1.i [2020-10-19 18:00:45,264 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:00:45,273 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 24 error locations. [2020-10-19 18:00:45,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2020-10-19 18:00:45,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:00:45,303 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:00:45,303 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:00:45,303 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:00:45,303 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:00:45,303 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:00:45,304 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:00:45,304 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:00:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-19 18:00:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:00:45,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:45,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:45,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:45,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash -754071983, now seen corresponding path program 1 times [2020-10-19 18:00:45,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:45,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628755065] [2020-10-19 18:00:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:45,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628755065] [2020-10-19 18:00:45,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:45,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:00:45,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624538567] [2020-10-19 18:00:45,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:00:45,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:45,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:00:45,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:00:45,668 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 6 states. [2020-10-19 18:00:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:45,949 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-10-19 18:00:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:00:45,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:00:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:45,962 INFO L225 Difference]: With dead ends: 55 [2020-10-19 18:00:45,962 INFO L226 Difference]: Without dead ends: 52 [2020-10-19 18:00:45,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:00:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-19 18:00:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-19 18:00:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-19 18:00:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-10-19 18:00:46,006 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 9 [2020-10-19 18:00:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:46,006 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-10-19 18:00:46,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:00:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-10-19 18:00:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:00:46,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:46,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:46,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:00:46,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:46,009 INFO L82 PathProgramCache]: Analyzing trace with hash -754071984, now seen corresponding path program 1 times [2020-10-19 18:00:46,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:46,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509241027] [2020-10-19 18:00:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:46,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509241027] [2020-10-19 18:00:46,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:46,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:00:46,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176526133] [2020-10-19 18:00:46,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:00:46,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:00:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:00:46,128 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 6 states. [2020-10-19 18:00:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:46,442 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-10-19 18:00:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:00:46,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:00:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:46,444 INFO L225 Difference]: With dead ends: 50 [2020-10-19 18:00:46,444 INFO L226 Difference]: Without dead ends: 50 [2020-10-19 18:00:46,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:00:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-19 18:00:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-19 18:00:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-19 18:00:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-10-19 18:00:46,456 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2020-10-19 18:00:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:46,456 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-10-19 18:00:46,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:00:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-10-19 18:00:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:00:46,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:46,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:46,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:00:46,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:46,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:46,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1186296498, now seen corresponding path program 1 times [2020-10-19 18:00:46,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:46,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515241297] [2020-10-19 18:00:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:46,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515241297] [2020-10-19 18:00:46,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:46,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:00:46,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854044619] [2020-10-19 18:00:46,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:00:46,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:46,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:00:46,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:00:46,643 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 7 states. [2020-10-19 18:00:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:46,892 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-19 18:00:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:00:46,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-19 18:00:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:46,895 INFO L225 Difference]: With dead ends: 49 [2020-10-19 18:00:46,896 INFO L226 Difference]: Without dead ends: 49 [2020-10-19 18:00:46,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:00:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-19 18:00:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-19 18:00:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-19 18:00:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-19 18:00:46,909 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 11 [2020-10-19 18:00:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:46,912 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-19 18:00:46,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:00:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-19 18:00:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:00:46,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:46,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:46,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:00:46,914 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:46,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:46,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1880316875, now seen corresponding path program 1 times [2020-10-19 18:00:46,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:46,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183513373] [2020-10-19 18:00:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:47,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183513373] [2020-10-19 18:00:47,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:47,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:00:47,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577562384] [2020-10-19 18:00:47,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:00:47,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:47,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:00:47,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:00:47,056 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 5 states. [2020-10-19 18:00:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:47,181 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-10-19 18:00:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:00:47,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 18:00:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:47,183 INFO L225 Difference]: With dead ends: 45 [2020-10-19 18:00:47,184 INFO L226 Difference]: Without dead ends: 45 [2020-10-19 18:00:47,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:00:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-19 18:00:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-19 18:00:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-19 18:00:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-19 18:00:47,191 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 18 [2020-10-19 18:00:47,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:47,191 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-19 18:00:47,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:00:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-19 18:00:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:00:47,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:47,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:47,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:00:47,194 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:47,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1880316874, now seen corresponding path program 1 times [2020-10-19 18:00:47,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:47,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447077917] [2020-10-19 18:00:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:47,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447077917] [2020-10-19 18:00:47,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:47,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:00:47,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100636203] [2020-10-19 18:00:47,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:00:47,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:47,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:00:47,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:00:47,325 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 5 states. [2020-10-19 18:00:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:47,453 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-19 18:00:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:00:47,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 18:00:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:47,455 INFO L225 Difference]: With dead ends: 41 [2020-10-19 18:00:47,455 INFO L226 Difference]: Without dead ends: 41 [2020-10-19 18:00:47,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:00:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-19 18:00:47,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-19 18:00:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 18:00:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-19 18:00:47,462 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 18 [2020-10-19 18:00:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:47,462 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-19 18:00:47,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:00:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-19 18:00:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:00:47,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:47,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:47,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:00:47,464 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:47,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1180384893, now seen corresponding path program 1 times [2020-10-19 18:00:47,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:47,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026230616] [2020-10-19 18:00:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:47,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026230616] [2020-10-19 18:00:47,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:47,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:00:47,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182389587] [2020-10-19 18:00:47,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:00:47,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:47,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:00:47,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:00:47,669 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 13 states. [2020-10-19 18:00:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:48,044 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-19 18:00:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:00:48,044 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-19 18:00:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:48,045 INFO L225 Difference]: With dead ends: 40 [2020-10-19 18:00:48,045 INFO L226 Difference]: Without dead ends: 40 [2020-10-19 18:00:48,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:00:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-19 18:00:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-19 18:00:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:00:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-10-19 18:00:48,050 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 25 [2020-10-19 18:00:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:48,051 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-10-19 18:00:48,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:00:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-10-19 18:00:48,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:00:48,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:48,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:48,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:00:48,052 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2062773891, now seen corresponding path program 1 times [2020-10-19 18:00:48,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:48,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448134167] [2020-10-19 18:00:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:48,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448134167] [2020-10-19 18:00:48,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:48,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:00:48,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496905016] [2020-10-19 18:00:48,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:00:48,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:48,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:00:48,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:00:48,263 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2020-10-19 18:00:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:48,636 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-19 18:00:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:00:48,637 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-19 18:00:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:48,639 INFO L225 Difference]: With dead ends: 39 [2020-10-19 18:00:48,639 INFO L226 Difference]: Without dead ends: 39 [2020-10-19 18:00:48,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:00:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-19 18:00:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-19 18:00:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 18:00:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-19 18:00:48,648 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 26 [2020-10-19 18:00:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:48,649 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-19 18:00:48,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:00:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-19 18:00:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:00:48,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:48,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:48,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:00:48,651 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:48,652 INFO L82 PathProgramCache]: Analyzing trace with hash 478518911, now seen corresponding path program 1 times [2020-10-19 18:00:48,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:48,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441704044] [2020-10-19 18:00:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441704044] [2020-10-19 18:00:48,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:48,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-19 18:00:48,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270398926] [2020-10-19 18:00:48,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:00:48,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:48,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:00:48,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:00:48,938 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 14 states. [2020-10-19 18:00:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:49,297 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-10-19 18:00:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:00:49,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2020-10-19 18:00:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:49,299 INFO L225 Difference]: With dead ends: 38 [2020-10-19 18:00:49,299 INFO L226 Difference]: Without dead ends: 38 [2020-10-19 18:00:49,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:00:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-19 18:00:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-19 18:00:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:00:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-10-19 18:00:49,304 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 27 [2020-10-19 18:00:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:49,305 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-10-19 18:00:49,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:00:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-10-19 18:00:49,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:00:49,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:49,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:49,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:00:49,307 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1948606696, now seen corresponding path program 1 times [2020-10-19 18:00:49,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:49,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504702074] [2020-10-19 18:00:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:49,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 18:00:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:49,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504702074] [2020-10-19 18:00:49,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:49,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-19 18:00:49,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488763547] [2020-10-19 18:00:49,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 18:00:49,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:49,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 18:00:49,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:00:49,635 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 19 states. [2020-10-19 18:00:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:50,176 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2020-10-19 18:00:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 18:00:50,177 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-10-19 18:00:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:50,177 INFO L225 Difference]: With dead ends: 40 [2020-10-19 18:00:50,177 INFO L226 Difference]: Without dead ends: 38 [2020-10-19 18:00:50,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2020-10-19 18:00:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-19 18:00:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-19 18:00:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:00:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2020-10-19 18:00:50,190 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 28 [2020-10-19 18:00:50,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:50,191 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2020-10-19 18:00:50,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 18:00:50,191 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-10-19 18:00:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:00:50,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:50,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:50,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:00:50,195 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:50,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1949184447, now seen corresponding path program 1 times [2020-10-19 18:00:50,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:50,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552516736] [2020-10-19 18:00:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:50,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552516736] [2020-10-19 18:00:50,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:50,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-19 18:00:50,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689266354] [2020-10-19 18:00:50,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:00:50,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:50,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:00:50,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:00:50,449 INFO L87 Difference]: Start difference. First operand 38 states and 37 transitions. Second operand 14 states. [2020-10-19 18:00:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:50,787 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-10-19 18:00:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:00:50,788 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-19 18:00:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:50,789 INFO L225 Difference]: With dead ends: 37 [2020-10-19 18:00:50,789 INFO L226 Difference]: Without dead ends: 37 [2020-10-19 18:00:50,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:00:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-19 18:00:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-19 18:00:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 18:00:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2020-10-19 18:00:50,794 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 28 [2020-10-19 18:00:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:50,795 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2020-10-19 18:00:50,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:00:50,795 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-10-19 18:00:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:00:50,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:50,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:50,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:00:50,797 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:50,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:50,797 INFO L82 PathProgramCache]: Analyzing trace with hash 295175809, now seen corresponding path program 1 times [2020-10-19 18:00:50,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:50,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675562885] [2020-10-19 18:00:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:50,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:50,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675562885] [2020-10-19 18:00:50,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:50,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-19 18:00:50,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318651377] [2020-10-19 18:00:50,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:00:50,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:50,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:00:50,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:00:50,992 INFO L87 Difference]: Start difference. First operand 37 states and 36 transitions. Second operand 14 states. [2020-10-19 18:00:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:51,322 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-10-19 18:00:51,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:00:51,323 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2020-10-19 18:00:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:51,324 INFO L225 Difference]: With dead ends: 36 [2020-10-19 18:00:51,324 INFO L226 Difference]: Without dead ends: 36 [2020-10-19 18:00:51,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:00:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-19 18:00:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-19 18:00:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 18:00:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 35 transitions. [2020-10-19 18:00:51,328 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 35 transitions. Word has length 29 [2020-10-19 18:00:51,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:51,329 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 35 transitions. [2020-10-19 18:00:51,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:00:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-10-19 18:00:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:00:51,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:51,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:51,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:00:51,331 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:51,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:51,331 INFO L82 PathProgramCache]: Analyzing trace with hash 560515585, now seen corresponding path program 1 times [2020-10-19 18:00:51,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:51,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829801806] [2020-10-19 18:00:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:51,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829801806] [2020-10-19 18:00:51,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:51,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-19 18:00:51,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244112986] [2020-10-19 18:00:51,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-19 18:00:51,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-19 18:00:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:00:51,751 INFO L87 Difference]: Start difference. First operand 36 states and 35 transitions. Second operand 22 states. [2020-10-19 18:00:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:52,471 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-10-19 18:00:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 18:00:52,472 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 30 [2020-10-19 18:00:52,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:52,473 INFO L225 Difference]: With dead ends: 35 [2020-10-19 18:00:52,473 INFO L226 Difference]: Without dead ends: 35 [2020-10-19 18:00:52,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2020-10-19 18:00:52,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-19 18:00:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-19 18:00:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:00:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2020-10-19 18:00:52,481 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 30 [2020-10-19 18:00:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:52,482 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2020-10-19 18:00:52,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-19 18:00:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-10-19 18:00:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:00:52,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:52,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:52,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:00:52,484 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr10ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr11ASSERT_VIOLATIONMEMORY_FREE, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:52,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1278248495, now seen corresponding path program 1 times [2020-10-19 18:00:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:52,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780359734] [2020-10-19 18:00:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:52,773 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-10-19 18:00:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-19 18:00:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:54,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780359734] [2020-10-19 18:00:54,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:54,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-10-19 18:00:54,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449124016] [2020-10-19 18:00:54,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-19 18:00:54,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:54,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-19 18:00:54,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2020-10-19 18:00:54,743 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand 28 states. [2020-10-19 18:00:55,178 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-19 18:00:56,179 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-19 18:00:56,381 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-19 18:00:56,549 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-19 18:00:56,701 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-19 18:00:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:56,836 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2020-10-19 18:00:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-19 18:00:56,837 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2020-10-19 18:00:56,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:56,837 INFO L225 Difference]: With dead ends: 34 [2020-10-19 18:00:56,837 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:00:56,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2020-10-19 18:00:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:00:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:00:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:00:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:00:56,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-19 18:00:56,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:56,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:00:56,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-19 18:00:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:00:56,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:00:56,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:00:56,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:00:56 BoogieIcfgContainer [2020-10-19 18:00:56,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:00:56,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:00:56,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:00:56,848 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:00:56,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:00:45" (3/4) ... [2020-10-19 18:00:56,851 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:00:56,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:00:56,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:00:56,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-19 18:00:56,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-19 18:00:56,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-19 18:00:56,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-19 18:00:56,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_data [2020-10-19 18:00:56,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:00:56,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-19 18:00:56,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_data [2020-10-19 18:00:56,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-10-19 18:00:56,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-19 18:00:56,866 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:00:56,866 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:00:56,917 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:00:56,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:00:56,919 INFO L168 Benchmark]: Toolchain (without parser) took 13036.36 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 291.0 MB). Free memory was 950.6 MB in the beginning and 873.3 MB in the end (delta: 77.3 MB). Peak memory consumption was 368.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:56,919 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:00:56,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 557.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -134.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:56,921 INFO L168 Benchmark]: Boogie Preprocessor took 62.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:56,921 INFO L168 Benchmark]: RCFGBuilder took 727.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:56,922 INFO L168 Benchmark]: TraceAbstraction took 11608.67 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 186.1 MB). Free memory was 1.0 GB in the beginning and 875.4 MB in the end (delta: 150.2 MB). Peak memory consumption was 336.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:56,923 INFO L168 Benchmark]: Witness Printer took 69.77 ms. Allocated memory is still 1.3 GB. Free memory was 875.4 MB in the beginning and 873.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:56,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 557.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -134.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 62.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 727.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11608.67 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 186.1 MB). Free memory was 1.0 GB in the beginning and 875.4 MB in the end (delta: 150.2 MB). Peak memory consumption was 336.3 MB. Max. memory is 11.5 GB. * Witness Printer took 69.77 ms. Allocated memory is still 1.3 GB. Free memory was 875.4 MB in the beginning and 873.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 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: 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: 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: 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: 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: 534]: 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: 538]: free always succeeds For all program executions holds that free 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: 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: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 80 locations, 24 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.5s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 305 SDtfs, 374 SDslu, 1252 SDs, 0 SdLazy, 3012 SolverSat, 188 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 279 ConstructedInterpolants, 0 QuantifiedInterpolants, 87547 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...