./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0234-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX --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 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:43:48,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:43:48,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:43:48,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:43:48,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:43:48,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:43:48,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:43:48,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:43:48,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:43:48,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:43:48,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:43:48,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:43:48,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:43:48,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:43:48,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:43:48,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:43:48,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:43:48,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:43:48,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:43:48,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:43:48,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:43:48,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:43:48,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:43:48,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:43:48,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:43:48,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:43:48,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:43:48,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:43:48,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:43:48,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:43:48,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:43:48,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:43:48,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:43:48,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:43:48,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:43:48,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:43:48,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:43:48,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:43:48,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:43:48,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:43:48,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:43:48,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 10:43:48,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:43:48,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:43:48,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:43:48,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:43:48,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:43:48,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:43:48,537 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:43:48,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:43:48,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:43:48,538 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:43:48,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:43:48,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:43:48,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:43:48,538 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:43:48,539 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:43:48,539 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:43:48,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:43:48,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:43:48,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:43:48,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:43:48,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:43:48,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:43:48,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:43:48,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:43:48,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:43:48,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:43:48,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:43:48,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:43:48,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:43:48,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 [2021-11-09 10:43:48,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:43:48,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:43:48,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:43:48,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:43:48,790 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:43:48,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/memsafety/test-0234-2.i [2021-11-09 10:43:48,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/597c07a1c/944d6e1887b14bdaa81604f055ec1cab/FLAG8332daabf [2021-11-09 10:43:49,364 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:43:49,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/sv-benchmarks/c/memsafety/test-0234-2.i [2021-11-09 10:43:49,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/597c07a1c/944d6e1887b14bdaa81604f055ec1cab/FLAG8332daabf [2021-11-09 10:43:49,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/597c07a1c/944d6e1887b14bdaa81604f055ec1cab [2021-11-09 10:43:49,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:43:49,663 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:43:49,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:49,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:43:49,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:43:49,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:49" (1/1) ... [2021-11-09 10:43:49,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251a68f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:49, skipping insertion in model container [2021-11-09 10:43:49,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:49" (1/1) ... [2021-11-09 10:43:49,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:43:49,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:43:50,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:50,121 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:43:50,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:50,208 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:43:50,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50 WrapperNode [2021-11-09 10:43:50,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:50,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:43:50,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:43:50,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:43:50,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:43:50,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:43:50,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:43:50,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:43:50,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (1/1) ... [2021-11-09 10:43:50,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:43:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:50,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:43:50,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:43:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 10:43:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:43:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 10:43:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 10:43:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 10:43:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 10:43:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 10:43:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 10:43:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-11-09 10:43:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-11-09 10:43:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-11-09 10:43:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-11-09 10:43:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-11-09 10:43:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-11-09 10:43:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-11-09 10:43:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-11-09 10:43:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-11-09 10:43:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-11-09 10:43:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-11-09 10:43:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-11-09 10:43:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 10:43:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 10:43:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 10:43:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 10:43:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 10:43:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 10:43:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 10:43:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:43:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 10:43:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 10:43:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 10:43:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 10:43:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 10:43:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 10:43:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 10:43:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 10:43:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 10:43:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 10:43:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 10:43:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 10:43:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 10:43:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 10:43:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 10:43:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 10:43:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 10:43:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 10:43:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 10:43:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 10:43:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 10:43:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 10:43:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 10:43:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 10:43:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 10:43:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 10:43:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 10:43:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 10:43:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 10:43:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 10:43:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 10:43:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 10:43:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 10:43:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 10:43:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 10:43:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 10:43:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 10:43:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 10:43:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 10:43:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 10:43:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 10:43:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 10:43:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 10:43:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 10:43:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 10:43:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 10:43:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 10:43:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 10:43:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 10:43:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 10:43:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 10:43:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 10:43:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 10:43:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 10:43:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 10:43:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 10:43:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 10:43:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 10:43:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 10:43:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 10:43:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 10:43:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 10:43:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 10:43:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 10:43:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 10:43:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 10:43:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 10:43:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 10:43:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 10:43:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 10:43:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 10:43:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 10:43:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 10:43:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 10:43:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 10:43:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 10:43:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 10:43:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 10:43:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 10:43:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 10:43:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 10:43:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 10:43:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 10:43:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 10:43:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 10:43:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 10:43:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 10:43:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 10:43:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 10:43:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 10:43:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 10:43:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 10:43:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 10:43:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 10:43:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 10:43:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 10:43:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 10:43:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 10:43:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 10:43:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 10:43:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 10:43:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 10:43:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 10:43:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 10:43:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 10:43:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 10:43:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 10:43:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 10:43:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 10:43:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 10:43:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 10:43:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 10:43:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 10:43:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 10:43:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 10:43:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 10:43:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 10:43:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 10:43:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 10:43:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 10:43:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 10:43:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 10:43:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 10:43:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 10:43:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 10:43:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 10:43:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 10:43:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 10:43:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 10:43:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 10:43:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 10:43:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 10:43:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 10:43:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 10:43:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 10:43:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 10:43:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 10:43:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 10:43:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 10:43:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 10:43:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 10:43:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 10:43:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 10:43:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 10:43:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 10:43:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 10:43:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 10:43:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 10:43:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 10:43:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 10:43:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 10:43:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 10:43:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 10:43:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 10:43:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 10:43:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 10:43:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 10:43:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-11-09 10:43:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:43:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 10:43:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 10:43:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-11-09 10:43:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-11-09 10:43:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:43:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:43:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-11-09 10:43:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-11-09 10:43:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-11-09 10:43:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-11-09 10:43:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-11-09 10:43:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:43:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-11-09 10:43:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-11-09 10:43:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-11-09 10:43:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-11-09 10:43:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 10:43:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 10:43:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:43:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 10:43:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:43:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:43:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:43:50,977 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:43:51,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:43:51,236 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 10:43:51,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:51 BoogieIcfgContainer [2021-11-09 10:43:51,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:43:51,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:43:51,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:43:51,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:43:51,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:43:49" (1/3) ... [2021-11-09 10:43:51,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e8750a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:51, skipping insertion in model container [2021-11-09 10:43:51,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:50" (2/3) ... [2021-11-09 10:43:51,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e8750a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:51, skipping insertion in model container [2021-11-09 10:43:51,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:51" (3/3) ... [2021-11-09 10:43:51,253 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2021-11-09 10:43:51,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:43:51,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-09 10:43:51,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:43:51,305 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:43:51,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-09 10:43:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 118 states have (on average 1.728813559322034) internal successors, (204), 183 states have internal predecessors, (204), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:43:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 10:43:51,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:51,334 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:51,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:43:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1775323064, now seen corresponding path program 1 times [2021-11-09 10:43:51,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:51,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217514683] [2021-11-09 10:43:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:51,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 10:43:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:51,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:51,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217514683] [2021-11-09 10:43:51,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217514683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:51,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:51,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:51,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299242077] [2021-11-09 10:43:51,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:51,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:51,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:51,572 INFO L87 Difference]: Start difference. First operand has 218 states, 118 states have (on average 1.728813559322034) internal successors, (204), 183 states have internal predecessors, (204), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:43:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:51,940 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2021-11-09 10:43:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:51,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 10:43:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:51,953 INFO L225 Difference]: With dead ends: 245 [2021-11-09 10:43:51,954 INFO L226 Difference]: Without dead ends: 242 [2021-11-09 10:43:51,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-09 10:43:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 215. [2021-11-09 10:43:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 112 states have (on average 1.7053571428571428) internal successors, (191), 181 states have internal predecessors, (191), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:43:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 230 transitions. [2021-11-09 10:43:52,007 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 230 transitions. Word has length 7 [2021-11-09 10:43:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:52,007 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 230 transitions. [2021-11-09 10:43:52,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:43:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 230 transitions. [2021-11-09 10:43:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 10:43:52,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:52,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:52,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:43:52,009 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:43:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1765019691, now seen corresponding path program 1 times [2021-11-09 10:43:52,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:52,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918440285] [2021-11-09 10:43:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:52,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:52,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:43:52,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427130383] [2021-11-09 10:43:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:52,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:52,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:52,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:43:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:52,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:43:52,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:52,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:43:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:52,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:52,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918440285] [2021-11-09 10:43:52,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:43:52,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427130383] [2021-11-09 10:43:52,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427130383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:52,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:52,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:43:52,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557160356] [2021-11-09 10:43:52,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:52,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:52,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:52,334 INFO L87 Difference]: Start difference. First operand 215 states and 230 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:43:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:52,446 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2021-11-09 10:43:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 10:43:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:52,451 INFO L225 Difference]: With dead ends: 214 [2021-11-09 10:43:52,452 INFO L226 Difference]: Without dead ends: 214 [2021-11-09 10:43:52,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:52,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-09 10:43:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-09 10:43:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 112 states have (on average 1.6964285714285714) internal successors, (190), 180 states have internal predecessors, (190), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:43:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 229 transitions. [2021-11-09 10:43:52,484 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 229 transitions. Word has length 12 [2021-11-09 10:43:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:52,484 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 229 transitions. [2021-11-09 10:43:52,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:43:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 229 transitions. [2021-11-09 10:43:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 10:43:52,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:52,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:52,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:52,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:52,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:43:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1765019692, now seen corresponding path program 1 times [2021-11-09 10:43:52,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:52,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373073104] [2021-11-09 10:43:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:52,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:52,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:43:52,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414783936] [2021-11-09 10:43:52,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:52,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:52,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:52,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:52,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:43:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:52,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:43:52,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:52,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-09 10:43:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:53,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:53,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373073104] [2021-11-09 10:43:53,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:43:53,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414783936] [2021-11-09 10:43:53,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414783936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:53,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:53,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:43:53,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034137373] [2021-11-09 10:43:53,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:53,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:53,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:53,012 INFO L87 Difference]: Start difference. First operand 214 states and 229 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:43:53,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:53,104 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2021-11-09 10:43:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:53,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 10:43:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:53,107 INFO L225 Difference]: With dead ends: 213 [2021-11-09 10:43:53,107 INFO L226 Difference]: Without dead ends: 213 [2021-11-09 10:43:53,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-09 10:43:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-11-09 10:43:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 111 states have (on average 1.7027027027027026) internal successors, (189), 179 states have internal predecessors, (189), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:43:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2021-11-09 10:43:53,129 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 12 [2021-11-09 10:43:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:53,129 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2021-11-09 10:43:53,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:43:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2021-11-09 10:43:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 10:43:53,135 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:53,136 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:53,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-09 10:43:53,361 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:43:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1481553517, now seen corresponding path program 1 times [2021-11-09 10:43:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:53,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652804234] [2021-11-09 10:43:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:53,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:53,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:43:53,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65632534] [2021-11-09 10:43:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:53,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:53,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:53,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:43:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:53,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-09 10:43:53,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:53,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-09 10:43:54,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-09 10:43:54,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-09 10:43:55,072 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-09 10:43:55,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2021-11-09 10:43:55,086 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:43:55,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2021-11-09 10:43:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 98 proven. 13 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-09 10:43:55,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:55,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652804234] [2021-11-09 10:43:55,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:43:55,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65632534] [2021-11-09 10:43:55,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65632534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:55,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:43:55,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 10:43:55,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071974322] [2021-11-09 10:43:55,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 10:43:55,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 10:43:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:43:55,676 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-09 10:43:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:58,439 INFO L93 Difference]: Finished difference Result 241 states and 265 transitions. [2021-11-09 10:43:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:43:58,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 123 [2021-11-09 10:43:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:58,444 INFO L225 Difference]: With dead ends: 241 [2021-11-09 10:43:58,444 INFO L226 Difference]: Without dead ends: 241 [2021-11-09 10:43:58,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-11-09 10:43:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-09 10:43:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 210. [2021-11-09 10:43:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 111 states have (on average 1.6756756756756757) internal successors, (186), 176 states have internal predecessors, (186), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:43:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2021-11-09 10:43:58,453 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 123 [2021-11-09 10:43:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:58,454 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2021-11-09 10:43:58,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-09 10:43:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2021-11-09 10:43:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 10:43:58,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:58,456 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:58,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:58,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:58,681 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:43:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1481553518, now seen corresponding path program 1 times [2021-11-09 10:43:58,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:58,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801666287] [2021-11-09 10:43:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:58,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:58,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:43:58,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339100608] [2021-11-09 10:43:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:58,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:58,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:58,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:43:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:59,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 10:43:59,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:59,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:43:59,531 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:43:59,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 10:43:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-09 10:43:59,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:59,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801666287] [2021-11-09 10:43:59,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:43:59,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339100608] [2021-11-09 10:43:59,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339100608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:59,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:43:59,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 10:43:59,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74448567] [2021-11-09 10:43:59,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 10:43:59,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:59,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 10:43:59,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:43:59,551 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 10:44:00,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:00,393 INFO L93 Difference]: Finished difference Result 240 states and 264 transitions. [2021-11-09 10:44:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:44:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2021-11-09 10:44:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:00,398 INFO L225 Difference]: With dead ends: 240 [2021-11-09 10:44:00,398 INFO L226 Difference]: Without dead ends: 240 [2021-11-09 10:44:00,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-11-09 10:44:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-09 10:44:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 209. [2021-11-09 10:44:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 175 states have internal predecessors, (185), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:44:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2021-11-09 10:44:00,406 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 123 [2021-11-09 10:44:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:00,407 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2021-11-09 10:44:00,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 10:44:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2021-11-09 10:44:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 10:44:00,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:00,410 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:00,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:00,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:00,627 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr2REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:44:00,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2138746509, now seen corresponding path program 1 times [2021-11-09 10:44:00,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:00,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036460488] [2021-11-09 10:44:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:00,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:00,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:44:00,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649178816] [2021-11-09 10:44:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:00,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:00,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:00,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:00,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:44:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:01,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-09 10:44:01,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:01,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:44:01,516 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:44:01,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 10:44:01,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:44:01,637 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:44:01,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 10:44:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 14 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-09 10:44:01,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:01,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036460488] [2021-11-09 10:44:01,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:44:01,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649178816] [2021-11-09 10:44:01,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649178816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:01,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:44:01,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 10:44:01,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803569547] [2021-11-09 10:44:01,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 10:44:01,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 10:44:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:44:01,666 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 10:44:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:02,742 INFO L93 Difference]: Finished difference Result 237 states and 261 transitions. [2021-11-09 10:44:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 10:44:02,742 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 125 [2021-11-09 10:44:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:02,744 INFO L225 Difference]: With dead ends: 237 [2021-11-09 10:44:02,744 INFO L226 Difference]: Without dead ends: 237 [2021-11-09 10:44:02,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-11-09 10:44:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-09 10:44:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 206. [2021-11-09 10:44:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 111 states have (on average 1.6396396396396395) internal successors, (182), 172 states have internal predecessors, (182), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:44:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2021-11-09 10:44:02,752 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 125 [2021-11-09 10:44:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:02,753 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2021-11-09 10:44:02,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 10:44:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2021-11-09 10:44:02,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 10:44:02,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:02,756 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:02,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:02,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:02,981 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr3REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:44:02,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:02,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2138746508, now seen corresponding path program 1 times [2021-11-09 10:44:02,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:02,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251152229] [2021-11-09 10:44:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:02,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:03,000 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:44:03,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897292038] [2021-11-09 10:44:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:03,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:03,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:03,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:44:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:03,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-09 10:44:03,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:03,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-09 10:44:04,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-09 10:44:04,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-09 10:44:04,776 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-09 10:44:04,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2021-11-09 10:44:04,807 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 10:44:04,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 45 [2021-11-09 10:44:05,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-09 10:44:05,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-09 10:44:05,218 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-09 10:44:05,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 55 [2021-11-09 10:44:05,249 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-09 10:44:05,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-11-09 10:44:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 125 proven. 39 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-09 10:44:11,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:11,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251152229] [2021-11-09 10:44:11,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:44:11,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897292038] [2021-11-09 10:44:11,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897292038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:11,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:44:11,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-09 10:44:11,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062822779] [2021-11-09 10:44:11,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 10:44:11,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 10:44:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=362, Unknown=2, NotChecked=0, Total=420 [2021-11-09 10:44:11,629 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-09 10:44:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:31,618 INFO L93 Difference]: Finished difference Result 234 states and 258 transitions. [2021-11-09 10:44:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 10:44:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 125 [2021-11-09 10:44:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:31,621 INFO L225 Difference]: With dead ends: 234 [2021-11-09 10:44:31,621 INFO L226 Difference]: Without dead ends: 234 [2021-11-09 10:44:31,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=153, Invalid=1031, Unknown=6, NotChecked=0, Total=1190 [2021-11-09 10:44:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-09 10:44:31,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 203. [2021-11-09 10:44:31,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 111 states have (on average 1.6126126126126126) internal successors, (179), 169 states have internal predecessors, (179), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:44:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2021-11-09 10:44:31,630 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 125 [2021-11-09 10:44:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:31,631 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2021-11-09 10:44:31,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-09 10:44:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2021-11-09 10:44:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 10:44:31,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:31,633 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:31,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-09 10:44:31,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:31,848 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l3_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:44:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash -985383270, now seen corresponding path program 1 times [2021-11-09 10:44:31,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:31,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370983080] [2021-11-09 10:44:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:31,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:31,884 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:44:31,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982378190] [2021-11-09 10:44:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:31,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:31,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:31,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:31,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 10:44:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:32,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-09 10:44:32,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:32,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-09 10:44:32,782 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 10:44:32,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 10:44:32,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:44:32,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:44:33,159 INFO L354 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2021-11-09 10:44:33,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 31 [2021-11-09 10:44:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 141 proven. 41 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-09 10:44:33,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:33,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370983080] [2021-11-09 10:44:33,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:44:33,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982378190] [2021-11-09 10:44:33,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982378190] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:33,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:44:33,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-09 10:44:33,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362424345] [2021-11-09 10:44:33,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 10:44:33,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:33,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 10:44:33,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-09 10:44:33,221 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-09 10:44:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:34,586 INFO L93 Difference]: Finished difference Result 231 states and 255 transitions. [2021-11-09 10:44:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 10:44:34,586 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 133 [2021-11-09 10:44:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:34,589 INFO L225 Difference]: With dead ends: 231 [2021-11-09 10:44:34,589 INFO L226 Difference]: Without dead ends: 231 [2021-11-09 10:44:34,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2021-11-09 10:44:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-09 10:44:34,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 200. [2021-11-09 10:44:34,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 111 states have (on average 1.5855855855855856) internal successors, (176), 166 states have internal predecessors, (176), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:44:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 215 transitions. [2021-11-09 10:44:34,597 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 215 transitions. Word has length 133 [2021-11-09 10:44:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:34,598 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 215 transitions. [2021-11-09 10:44:34,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-09 10:44:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 215 transitions. [2021-11-09 10:44:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 10:44:34,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:34,600 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:34,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:44:34,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:34,813 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l3_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:44:34,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash -985383269, now seen corresponding path program 1 times [2021-11-09 10:44:34,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:34,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841999362] [2021-11-09 10:44:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:34,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:34,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:44:34,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056382742] [2021-11-09 10:44:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:34,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:44:34,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:34,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:44:34,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 10:44:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:35,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-09 10:44:35,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:44:35,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-09 10:44:36,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-09 10:44:36,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-09 10:44:36,585 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-09 10:44:36,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2021-11-09 10:44:36,614 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 10:44:36,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 45 [2021-11-09 10:44:36,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-09 10:44:36,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-09 10:44:37,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-09 10:44:37,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-09 10:44:37,792 INFO L354 Elim1Store]: treesize reduction 92, result has 16.4 percent of original size [2021-11-09 10:44:37,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 70 [2021-11-09 10:44:37,878 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-09 10:44:37,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 75 [2021-11-09 10:44:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 66 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-09 10:44:44,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:44,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841999362] [2021-11-09 10:44:44,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:44:44,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056382742] [2021-11-09 10:44:44,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056382742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:44:44,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:44:44,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-09 10:44:44,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402290675] [2021-11-09 10:44:44,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 10:44:44,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 10:44:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=402, Unknown=2, NotChecked=0, Total=462 [2021-11-09 10:44:44,536 INFO L87 Difference]: Start difference. First operand 200 states and 215 transitions. Second operand has 22 states, 16 states have (on average 3.875) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-11-09 10:45:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:17,134 INFO L93 Difference]: Finished difference Result 244 states and 272 transitions. [2021-11-09 10:45:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 10:45:17,142 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.875) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 133 [2021-11-09 10:45:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:17,144 INFO L225 Difference]: With dead ends: 244 [2021-11-09 10:45:17,145 INFO L226 Difference]: Without dead ends: 244 [2021-11-09 10:45:17,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=162, Invalid=1235, Unknown=9, NotChecked=0, Total=1406 [2021-11-09 10:45:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-09 10:45:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 213. [2021-11-09 10:45:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 120 states have (on average 1.55) internal successors, (186), 176 states have internal predecessors, (186), 23 states have call successors, (23), 16 states have call predecessors, (23), 15 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-11-09 10:45:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 232 transitions. [2021-11-09 10:45:17,156 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 232 transitions. Word has length 133 [2021-11-09 10:45:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:17,157 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 232 transitions. [2021-11-09 10:45:17,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 3.875) internal successors, (62), 18 states have internal predecessors, (62), 10 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-11-09 10:45:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 232 transitions. [2021-11-09 10:45:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-09 10:45:17,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:17,159 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:17,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-09 10:45:17,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:17,386 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:17,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1073921652, now seen corresponding path program 1 times [2021-11-09 10:45:17,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:17,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047084745] [2021-11-09 10:45:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:17,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:17,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:17,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681863214] [2021-11-09 10:45:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:17,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:17,406 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:17,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 10:45:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:18,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-09 10:45:18,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:18,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-09 10:45:18,368 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 10:45:18,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 10:45:18,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-09 10:45:18,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:45:18,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:45:19,107 INFO L354 Elim1Store]: treesize reduction 158, result has 15.5 percent of original size [2021-11-09 10:45:19,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 47 [2021-11-09 10:45:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 103 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-09 10:45:19,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:19,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047084745] [2021-11-09 10:45:19,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:19,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681863214] [2021-11-09 10:45:19,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681863214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:19,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:45:19,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-09 10:45:19,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655251666] [2021-11-09 10:45:19,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 10:45:19,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 10:45:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-11-09 10:45:19,283 INFO L87 Difference]: Start difference. First operand 213 states and 232 transitions. Second operand has 22 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 9 states have call successors, (18), 4 states have call predecessors, (18), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-09 10:45:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:20,718 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2021-11-09 10:45:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 10:45:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 9 states have call successors, (18), 4 states have call predecessors, (18), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) Word has length 141 [2021-11-09 10:45:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:20,722 INFO L225 Difference]: With dead ends: 277 [2021-11-09 10:45:20,722 INFO L226 Difference]: Without dead ends: 277 [2021-11-09 10:45:20,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 115 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2021-11-09 10:45:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-09 10:45:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 239. [2021-11-09 10:45:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.542857142857143) internal successors, (216), 197 states have internal predecessors, (216), 28 states have call successors, (28), 17 states have call predecessors, (28), 17 states have return successors, (32), 25 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-09 10:45:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 276 transitions. [2021-11-09 10:45:20,750 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 276 transitions. Word has length 141 [2021-11-09 10:45:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:20,751 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 276 transitions. [2021-11-09 10:45:20,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 9 states have call successors, (18), 4 states have call predecessors, (18), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-09 10:45:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 276 transitions. [2021-11-09 10:45:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-09 10:45:20,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:20,757 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:20,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-09 10:45:20,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 10:45:20,972 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1073921653, now seen corresponding path program 1 times [2021-11-09 10:45:20,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:20,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046418358] [2021-11-09 10:45:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:20,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:20,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:20,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358633088] [2021-11-09 10:45:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:20,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:20,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:20,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:21,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 10:45:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:21,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-09 10:45:21,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:21,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-09 10:45:22,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-09 10:45:22,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-09 10:45:23,086 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-09 10:45:23,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2021-11-09 10:45:23,120 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 10:45:23,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 45 [2021-11-09 10:45:23,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-09 10:45:23,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-09 10:45:23,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-09 10:45:23,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-09 10:45:24,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-09 10:45:24,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-09 10:45:25,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:25,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046418358] [2021-11-09 10:45:25,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:25,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358633088] [2021-11-09 10:45:25,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [calloc_model_~size, calloc_model_~nmemb, calloc_model_~ptr~0.base] [2021-11-09 10:45:25,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:25,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-09 10:45:25,454 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-09 10:45:25,454 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-09 10:45:25,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 10:45:25,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:45:25,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION [2021-11-09 10:45:25,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION [2021-11-09 10:45:25,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION [2021-11-09 10:45:25,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION [2021-11-09 10:45:25,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION [2021-11-09 10:45:25,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION [2021-11-09 10:45:25,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION [2021-11-09 10:45:25,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION [2021-11-09 10:45:25,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION [2021-11-09 10:45:25,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION [2021-11-09 10:45:25,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:25,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 10:45:25,677 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:25,679 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:45:25,685 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:45:25,686 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:45:25,686 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:45:25,686 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:45:25,687 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:45:25,687 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:45:25,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:45:25 BoogieIcfgContainer [2021-11-09 10:45:25,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:45:25,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:45:25,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:45:25,699 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:45:25,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:51" (3/4) ... [2021-11-09 10:45:25,703 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:45:25,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:45:25,704 INFO L168 Benchmark]: Toolchain (without parser) took 96040.70 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 54.8 MB in the beginning and 86.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2021-11-09 10:45:25,704 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:45:25,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.98 ms. Allocated memory is still 100.7 MB. Free memory was 54.6 MB in the beginning and 63.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:45:25,705 INFO L168 Benchmark]: Boogie Preprocessor took 96.39 ms. Allocated memory is still 100.7 MB. Free memory was 63.5 MB in the beginning and 59.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 10:45:25,705 INFO L168 Benchmark]: RCFGBuilder took 932.19 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 59.7 MB in the beginning and 80.2 MB in the end (delta: -20.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:45:25,706 INFO L168 Benchmark]: TraceAbstraction took 94456.47 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 79.4 MB in the beginning and 86.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:45:25,706 INFO L168 Benchmark]: Witness Printer took 4.28 ms. Allocated memory is still 176.2 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:45:25,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 544.98 ms. Allocated memory is still 100.7 MB. Free memory was 54.6 MB in the beginning and 63.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.39 ms. Allocated memory is still 100.7 MB. Free memory was 63.5 MB in the beginning and 59.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.19 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 59.7 MB in the beginning and 80.2 MB in the end (delta: -20.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94456.47 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 79.4 MB in the beginning and 86.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.28 ms. Allocated memory is still 176.2 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L766] static struct L0 *list; [L768] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL, EXPR zalloc_or_die(119U) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L675] RET, EXPR zalloc_or_die(119U) [L675] item->down = zalloc_or_die(119U) [L676] EXPR \read(**list) [L676] item->next = *list [L677] *list = item [L683] RET l4_insert(&item->down) [L684] COND FALSE !(__VERIFIER_nondet_int()) [L685] EXPR \read(**list) [L685] item->next = *list [L686] *list = item [L692] RET l3_insert(&item->down) [L693] COND FALSE !(__VERIFIER_nondet_int()) [L694] \read(**list) - UnprovableResult [Line: 727]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 236 locations, 70 error locations. Started 1 CEGAR loops. OverallTime: 94.3s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 60.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1777 SDtfs, 1571 SDslu, 9110 SDs, 0 SdLazy, 11936 SolverSat, 683 SolverUnsat, 50 SolverUnknown, 0 SolverNotchecked, 25.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1019 GetRequests, 787 SyntacticMatches, 28 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 48.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=10, InterpolantAutomatonStates: 141, 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, 10 MinimizatonAttempts, 251 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.6s InterpolantComputationTime, 1075 NumberOfCodeBlocks, 1075 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 924 ConstructedInterpolants, 222 QuantifiedInterpolants, 5567 SizeOfPredicates, 71 NumberOfNonLiveVariables, 6494 ConjunctsInSsa, 580 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 1432/1680 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 could not prove your program: unable to determine feasibility of some traces [2021-11-09 10:45:25,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX --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 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:45:28,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:45:28,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:45:28,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:45:28,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:45:28,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:45:28,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:45:28,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:45:28,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:45:28,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:45:28,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:45:28,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:45:28,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:45:28,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:45:28,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:45:28,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:45:28,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:45:28,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:45:28,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:45:28,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:45:28,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:45:28,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:45:28,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:45:28,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:45:28,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:45:28,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:45:28,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:45:28,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:45:28,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:45:28,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:45:28,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:45:28,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:45:28,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:45:28,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:45:28,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:45:28,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:45:28,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:45:28,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:45:28,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:45:28,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:45:28,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:45:28,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 10:45:28,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:45:28,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:45:28,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:45:28,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:45:28,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:45:28,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:45:28,224 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:45:28,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:45:28,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:45:28,224 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:45:28,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:45:28,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:45:28,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:45:28,225 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:45:28,226 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:45:28,226 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:45:28,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:45:28,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:45:28,227 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:45:28,227 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:45:28,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:45:28,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:45:28,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:45:28,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:45:28,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:45:28,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:28,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:45:28,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:45:28,229 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:45:28,230 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:45:28,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:45:28,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:45:28,230 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 [2021-11-09 10:45:28,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:45:28,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:45:28,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:45:28,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:45:28,630 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:45:28,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/memsafety/test-0234-2.i [2021-11-09 10:45:28,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/55318b3a9/21a5caefc7e94136b7ad88f7f11accba/FLAG8a63ae196 [2021-11-09 10:45:29,338 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:45:29,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/sv-benchmarks/c/memsafety/test-0234-2.i [2021-11-09 10:45:29,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/55318b3a9/21a5caefc7e94136b7ad88f7f11accba/FLAG8a63ae196 [2021-11-09 10:45:29,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/data/55318b3a9/21a5caefc7e94136b7ad88f7f11accba [2021-11-09 10:45:29,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:45:29,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:45:29,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:29,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:45:29,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:45:29,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:29" (1/1) ... [2021-11-09 10:45:29,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8ae95c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:29, skipping insertion in model container [2021-11-09 10:45:29,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:29" (1/1) ... [2021-11-09 10:45:29,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:45:29,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:45:30,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:30,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:45:30,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:30,450 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:45:30,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30 WrapperNode [2021-11-09 10:45:30,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:30,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:45:30,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:45:30,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:45:30,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:45:30,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:45:30,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:45:30,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:45:30,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (1/1) ... [2021-11-09 10:45:30,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:30,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:30,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:45:30,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:45:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 10:45:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:45:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:45:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 10:45:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 10:45:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 10:45:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 10:45:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 10:45:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 10:45:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-11-09 10:45:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-11-09 10:45:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-11-09 10:45:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-11-09 10:45:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-11-09 10:45:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-11-09 10:45:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-11-09 10:45:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-11-09 10:45:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-11-09 10:45:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-11-09 10:45:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-11-09 10:45:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-11-09 10:45:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 10:45:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 10:45:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 10:45:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 10:45:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 10:45:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 10:45:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 10:45:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:45:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 10:45:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 10:45:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 10:45:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 10:45:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 10:45:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 10:45:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 10:45:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 10:45:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 10:45:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 10:45:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 10:45:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 10:45:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 10:45:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 10:45:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 10:45:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 10:45:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 10:45:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 10:45:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 10:45:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 10:45:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 10:45:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 10:45:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 10:45:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 10:45:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 10:45:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 10:45:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 10:45:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 10:45:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 10:45:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 10:45:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 10:45:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 10:45:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 10:45:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 10:45:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 10:45:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 10:45:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 10:45:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 10:45:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 10:45:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 10:45:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 10:45:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 10:45:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 10:45:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 10:45:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 10:45:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 10:45:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 10:45:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 10:45:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 10:45:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 10:45:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 10:45:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 10:45:30,697 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 10:45:30,697 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 10:45:30,697 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 10:45:30,697 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 10:45:30,697 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 10:45:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 10:45:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 10:45:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 10:45:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 10:45:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 10:45:30,698 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 10:45:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 10:45:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 10:45:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 10:45:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 10:45:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 10:45:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 10:45:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 10:45:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 10:45:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 10:45:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 10:45:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 10:45:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 10:45:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 10:45:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 10:45:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 10:45:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 10:45:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 10:45:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 10:45:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 10:45:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 10:45:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 10:45:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 10:45:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 10:45:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 10:45:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 10:45:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 10:45:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 10:45:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 10:45:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 10:45:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 10:45:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 10:45:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 10:45:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 10:45:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 10:45:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 10:45:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 10:45:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 10:45:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 10:45:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 10:45:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 10:45:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 10:45:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 10:45:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 10:45:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 10:45:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 10:45:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 10:45:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 10:45:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 10:45:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 10:45:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 10:45:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 10:45:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 10:45:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 10:45:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 10:45:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 10:45:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 10:45:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 10:45:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 10:45:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 10:45:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 10:45:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 10:45:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 10:45:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 10:45:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 10:45:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 10:45:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 10:45:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 10:45:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 10:45:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 10:45:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 10:45:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 10:45:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 10:45:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 10:45:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 10:45:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 10:45:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 10:45:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 10:45:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 10:45:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 10:45:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 10:45:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 10:45:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 10:45:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 10:45:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 10:45:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 10:45:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 10:45:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 10:45:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 10:45:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 10:45:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 10:45:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 10:45:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 10:45:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 10:45:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 10:45:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-11-09 10:45:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:45:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 10:45:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 10:45:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-11-09 10:45:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-11-09 10:45:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:45:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:45:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-11-09 10:45:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-11-09 10:45:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-11-09 10:45:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-11-09 10:45:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-11-09 10:45:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:45:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-11-09 10:45:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-11-09 10:45:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-11-09 10:45:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-11-09 10:45:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 10:45:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 10:45:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:45:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 10:45:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:45:30,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:45:30,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 10:45:30,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 10:45:31,431 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:45:31,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:45:31,865 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 10:45:31,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:31 BoogieIcfgContainer [2021-11-09 10:45:31,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:45:31,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:45:31,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:45:31,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:45:31,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:45:29" (1/3) ... [2021-11-09 10:45:31,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e708855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:31, skipping insertion in model container [2021-11-09 10:45:31,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:30" (2/3) ... [2021-11-09 10:45:31,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e708855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:31, skipping insertion in model container [2021-11-09 10:45:31,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:31" (3/3) ... [2021-11-09 10:45:31,892 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2021-11-09 10:45:31,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:45:31,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-09 10:45:31,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:45:31,985 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:45:31,985 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-09 10:45:32,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 113 states have (on average 1.761061946902655) internal successors, (199), 178 states have internal predecessors, (199), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 10:45:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 10:45:32,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:32,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:32,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:32,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash 245040585, now seen corresponding path program 1 times [2021-11-09 10:45:32,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:32,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211290094] [2021-11-09 10:45:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:32,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:32,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:32,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:32,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:45:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:32,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:45:32,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:32,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:32,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:32,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211290094] [2021-11-09 10:45:32,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211290094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:32,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:32,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:45:32,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828589105] [2021-11-09 10:45:32,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:45:32,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:45:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:45:32,447 INFO L87 Difference]: Start difference. First operand has 213 states, 113 states have (on average 1.761061946902655) internal successors, (199), 178 states have internal predecessors, (199), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:45:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:32,476 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2021-11-09 10:45:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:45:32,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 10:45:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:32,503 INFO L225 Difference]: With dead ends: 213 [2021-11-09 10:45:32,504 INFO L226 Difference]: Without dead ends: 210 [2021-11-09 10:45:32,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:45:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-09 10:45:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-09 10:45:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 107 states have (on average 1.7383177570093458) internal successors, (186), 176 states have internal predecessors, (186), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:45:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2021-11-09 10:45:32,598 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 7 [2021-11-09 10:45:32,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:32,599 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2021-11-09 10:45:32,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:45:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2021-11-09 10:45:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 10:45:32,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:32,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:32,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:32,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:32,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2078620137, now seen corresponding path program 1 times [2021-11-09 10:45:32,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:32,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944380962] [2021-11-09 10:45:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:32,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:32,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:32,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:32,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:45:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:33,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:45:33,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:33,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:45:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:33,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:33,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:33,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944380962] [2021-11-09 10:45:33,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944380962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:33,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:33,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:45:33,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624858260] [2021-11-09 10:45:33,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:33,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:33,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:33,226 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:45:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:33,571 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2021-11-09 10:45:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:33,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 10:45:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:33,575 INFO L225 Difference]: With dead ends: 209 [2021-11-09 10:45:33,575 INFO L226 Difference]: Without dead ends: 209 [2021-11-09 10:45:33,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-09 10:45:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-11-09 10:45:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 107 states have (on average 1.7289719626168225) internal successors, (185), 175 states have internal predecessors, (185), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 10:45:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2021-11-09 10:45:33,623 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 12 [2021-11-09 10:45:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:33,623 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2021-11-09 10:45:33,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:45:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2021-11-09 10:45:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 10:45:33,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:33,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:33,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:33,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:33,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2078620138, now seen corresponding path program 1 times [2021-11-09 10:45:33,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:33,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632742761] [2021-11-09 10:45:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:33,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:33,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:33,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 10:45:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:34,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:45:34,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-09 10:45:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:34,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:34,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:34,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632742761] [2021-11-09 10:45:34,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632742761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:34,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:34,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 2] imperfect sequences [] total 6 [2021-11-09 10:45:34,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397225874] [2021-11-09 10:45:34,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:45:34,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:45:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:45:34,662 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:45:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:36,955 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2021-11-09 10:45:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:45:36,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 10:45:36,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:36,961 INFO L225 Difference]: With dead ends: 219 [2021-11-09 10:45:36,961 INFO L226 Difference]: Without dead ends: 219 [2021-11-09 10:45:36,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:45:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-09 10:45:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-09 10:45:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 113 states have (on average 1.6902654867256637) internal successors, (191), 181 states have internal predecessors, (191), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-09 10:45:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-11-09 10:45:36,984 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 12 [2021-11-09 10:45:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:36,991 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-11-09 10:45:36,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 10:45:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-11-09 10:45:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 10:45:36,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:36,997 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:37,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:37,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:37,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1253485173, now seen corresponding path program 1 times [2021-11-09 10:45:37,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:37,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243096683] [2021-11-09 10:45:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:37,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:37,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:37,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:37,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 10:45:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:37,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:45:37,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-09 10:45:38,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-09 10:45:40,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:40,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243096683] [2021-11-09 10:45:40,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243096683] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:40,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:45:40,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-09 10:45:40,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186397668] [2021-11-09 10:45:40,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:45:40,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:45:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-09 10:45:40,167 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-09 10:45:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:40,690 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2021-11-09 10:45:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:45:40,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 123 [2021-11-09 10:45:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:40,693 INFO L225 Difference]: With dead ends: 236 [2021-11-09 10:45:40,693 INFO L226 Difference]: Without dead ends: 220 [2021-11-09 10:45:40,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:45:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-09 10:45:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-09 10:45:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 114 states have (on average 1.6842105263157894) internal successors, (192), 182 states have internal predecessors, (192), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-09 10:45:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2021-11-09 10:45:40,710 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 123 [2021-11-09 10:45:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:40,710 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2021-11-09 10:45:40,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-09 10:45:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2021-11-09 10:45:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 10:45:40,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:40,713 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:40,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:40,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:40,934 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash 717300927, now seen corresponding path program 1 times [2021-11-09 10:45:40,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:40,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861735637] [2021-11-09 10:45:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:40,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:40,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:40,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:40,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 10:45:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:41,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:45:41,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-09 10:45:42,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-09 10:45:44,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:44,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861735637] [2021-11-09 10:45:44,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861735637] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:45:44,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:44,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-09 10:45:44,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593505323] [2021-11-09 10:45:44,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 10:45:44,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 10:45:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:45:44,190 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-11-09 10:45:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:44,949 INFO L93 Difference]: Finished difference Result 237 states and 252 transitions. [2021-11-09 10:45:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:45:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 129 [2021-11-09 10:45:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:44,952 INFO L225 Difference]: With dead ends: 237 [2021-11-09 10:45:44,952 INFO L226 Difference]: Without dead ends: 221 [2021-11-09 10:45:44,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:45:44,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-09 10:45:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-11-09 10:45:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 115 states have (on average 1.6782608695652175) internal successors, (193), 183 states have internal predecessors, (193), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-09 10:45:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 236 transitions. [2021-11-09 10:45:44,965 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 236 transitions. Word has length 129 [2021-11-09 10:45:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:44,965 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 236 transitions. [2021-11-09 10:45:44,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-11-09 10:45:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 236 transitions. [2021-11-09 10:45:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-09 10:45:44,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:44,973 INFO L513 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:44,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:45,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:45,191 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1925186805, now seen corresponding path program 2 times [2021-11-09 10:45:45,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:45,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640139159] [2021-11-09 10:45:45,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:45:45,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:45,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:45,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 10:45:45,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:45:45,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:45,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:45:45,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-09 10:45:46,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-09 10:45:48,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:48,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640139159] [2021-11-09 10:45:48,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640139159] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:45:48,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:45:48,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-11-09 10:45:48,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095745352] [2021-11-09 10:45:48,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 10:45:48,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 10:45:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-09 10:45:48,514 INFO L87 Difference]: Start difference. First operand 221 states and 236 transitions. Second operand has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-11-09 10:45:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:49,387 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2021-11-09 10:45:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:45:49,389 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 135 [2021-11-09 10:45:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:49,397 INFO L225 Difference]: With dead ends: 238 [2021-11-09 10:45:49,397 INFO L226 Difference]: Without dead ends: 222 [2021-11-09 10:45:49,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:45:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-09 10:45:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-09 10:45:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 116 states have (on average 1.6724137931034482) internal successors, (194), 184 states have internal predecessors, (194), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-09 10:45:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2021-11-09 10:45:49,407 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 135 [2021-11-09 10:45:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:49,408 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2021-11-09 10:45:49,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-11-09 10:45:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2021-11-09 10:45:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-09 10:45:49,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:49,411 INFO L513 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:49,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:49,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:49,628 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-11-09 10:45:49,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:49,628 INFO L85 PathProgramCache]: Analyzing trace with hash 983492287, now seen corresponding path program 3 times [2021-11-09 10:45:49,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:49,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731576851] [2021-11-09 10:45:49,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:45:49,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:49,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:49,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:49,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 10:45:50,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:45:50,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:50,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 10:45:50,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:50,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:45:50,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-09 10:45:50,766 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 10:45:50,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-09 10:45:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-09 10:45:50,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:00,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:46:00,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731576851] [2021-11-09 10:46:00,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_l4_insert_~item~0.base_BEFORE_CALL_2] [2021-11-09 10:46:00,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1828165213] [2021-11-09 10:46:00,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:46:00,104 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-09 10:46:00,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/cvc4 [2021-11-09 10:46:00,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-09 10:46:00,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-09 10:46:00,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:46:00,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:00,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:46:00,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:00,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:03,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:07,432 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-09 10:46:07,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-09 10:46:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 259 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-09 10:46:07,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:15,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_l4_insert_~item~0.base_BEFORE_CALL_4] [2021-11-09 10:46:15,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034180527] [2021-11-09 10:46:15,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:46:15,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:15,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:15,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:15,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 10:46:16,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:46:16,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:16,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:46:16,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:16,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:16,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-09 10:46:16,913 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 10:46:16,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-09 10:46:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-09 10:46:16,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:25,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_l4_insert_~item~0.base_BEFORE_CALL_2] [2021-11-09 10:46:25,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:25,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-09 10:46:25,684 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-09 10:46:25,684 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-09 10:46:25,690 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-11-09 10:46:25,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 10:46:25,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:46:25,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION [2021-11-09 10:46:25,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION [2021-11-09 10:46:25,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION [2021-11-09 10:46:25,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION [2021-11-09 10:46:25,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION [2021-11-09 10:46:25,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION [2021-11-09 10:46:25,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION [2021-11-09 10:46:25,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION [2021-11-09 10:46:25,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION [2021-11-09 10:46:25,707 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION [2021-11-09 10:46:25,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:25,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:26,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-09 10:46:26,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt [2021-11-09 10:46:26,323 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2021-11-09 10:46:26,325 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:46:26,332 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:46:26,333 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:46:26,334 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:46:26,334 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:46:26,334 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:46:26,335 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-11-09 10:46:26,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:46:26 BoogieIcfgContainer [2021-11-09 10:46:26,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:46:26,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:46:26,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:46:26,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:46:26,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:31" (3/4) ... [2021-11-09 10:46:26,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:46:26,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:46:26,357 INFO L168 Benchmark]: Toolchain (without parser) took 56727.53 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 27.4 MB in the beginning and 52.5 MB in the end (delta: -25.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:26,357 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:46:26,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.50 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 33.4 MB in the end (delta: -6.3 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:26,358 INFO L168 Benchmark]: Boogie Preprocessor took 143.79 ms. Allocated memory is still 62.9 MB. Free memory was 33.4 MB in the beginning and 42.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:26,358 INFO L168 Benchmark]: RCFGBuilder took 1285.56 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 30.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:26,359 INFO L168 Benchmark]: TraceAbstraction took 54463.64 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 29.9 MB in the beginning and 52.5 MB in the end (delta: -22.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:26,359 INFO L168 Benchmark]: Witness Printer took 3.73 ms. Allocated memory is still 92.3 MB. Free memory is still 52.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:46:26,361 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 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 825.50 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 33.4 MB in the end (delta: -6.3 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 143.79 ms. Allocated memory is still 62.9 MB. Free memory was 33.4 MB in the beginning and 42.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1285.56 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 30.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 54463.64 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 29.9 MB in the beginning and 52.5 MB in the end (delta: -22.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.73 ms. Allocated memory is still 92.3 MB. Free memory is still 52.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L766] static struct L0 *list; [L768] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL, EXPR zalloc_or_die(119U) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L675] RET, EXPR zalloc_or_die(119U) [L675] item->down = zalloc_or_die(119U) - UnprovableResult [Line: 727]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 237 locations, 70 error locations. Started 1 CEGAR loops. OverallTime: 54.3s, OverallIterations: 7, TraceHistogramMax: 18, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1307 SDtfs, 70 SDslu, 5724 SDs, 0 SdLazy, 606 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 844 GetRequests, 783 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=6, InterpolantAutomatonStates: 43, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 559 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 964 ConstructedInterpolants, 25 QuantifiedInterpolants, 1756 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2176 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 2068/2319 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 could not prove your program: unable to determine feasibility of some traces [2021-11-09 10:46:26,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d74cdc-a316-40ce-9626-5606e56ab003/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN