./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt --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 e7e4a97fa815d265dd112866b503fcff377f0496 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:56:20,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:56:20,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:56:20,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:56:20,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:56:20,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:56:20,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:56:20,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:56:20,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:56:20,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:56:20,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:56:20,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:56:20,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:56:20,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:56:20,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:56:20,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:56:20,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:56:20,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:56:20,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:56:20,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:56:20,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:56:20,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:56:20,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:56:20,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:56:20,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:56:20,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:56:20,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:56:20,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:56:20,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:56:20,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:56:20,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:56:20,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:56:20,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:56:20,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:56:20,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:56:20,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:56:20,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:56:20,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:56:20,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:56:20,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:56:20,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:56:20,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:56:20,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:56:20,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:56:20,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:56:20,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:56:20,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:56:20,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:56:20,596 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:56:20,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:56:20,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:56:20,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:56:20,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:56:20,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:56:20,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:56:20,599 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:56:20,599 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:56:20,600 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:56:20,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:56:20,604 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:56:20,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:56:20,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:56:20,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:56:20,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:56:20,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:56:20,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:56:20,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:56:20,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:56:20,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:56:20,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:56:20,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:56:20,608 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_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7e4a97fa815d265dd112866b503fcff377f0496 [2021-10-13 00:56:20,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:56:20,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:56:20,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:56:20,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:56:20,935 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:56:20,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety/test-0158-3.i [2021-10-13 00:56:21,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/data/38d175663/d979ee2e819745b6bf561a8bf47b4df6/FLAG48c29a300 [2021-10-13 00:56:21,665 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:56:21,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/sv-benchmarks/c/memsafety/test-0158-3.i [2021-10-13 00:56:21,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/data/38d175663/d979ee2e819745b6bf561a8bf47b4df6/FLAG48c29a300 [2021-10-13 00:56:21,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/data/38d175663/d979ee2e819745b6bf561a8bf47b4df6 [2021-10-13 00:56:21,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:56:21,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:56:21,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:56:21,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:56:21,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:56:21,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:56:21" (1/1) ... [2021-10-13 00:56:21,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456fef91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:21, skipping insertion in model container [2021-10-13 00:56:21,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:56:21" (1/1) ... [2021-10-13 00:56:21,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:56:22,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:56:22,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:56:22,441 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:56:22,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:56:22,538 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:56:22,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22 WrapperNode [2021-10-13 00:56:22,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:56:22,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:56:22,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:56:22,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:56:22,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:56:22,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:56:22,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:56:22,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:56:22,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (1/1) ... [2021-10-13 00:56:22,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:56:22,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:22,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:22,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:56:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:56:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:56:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:56:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:56:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:56:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:56:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:56:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:56:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:56:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:56:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:56:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:56:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:56:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:56:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:56:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:56:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:56:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:56:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:56:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:56:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:56:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:56:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:56:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:56:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:56:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:56:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:56:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:56:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:56:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:56:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:56:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:56:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:56:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:56:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:56:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:56:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:56:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:56:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:56:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:56:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:56:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:56:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:56:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:56:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:56:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:56:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:56:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:56:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:56:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:56:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:56:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:56:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:56:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:56:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:56:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:56:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:56:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:56:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:56:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:56:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:56:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:56:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:56:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:56:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:56:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:56:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:56:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:56:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:56:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:56:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:56:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:56:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:56:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:56:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:56:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:56:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:56:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:56:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:56:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:56:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:56:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:56:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:56:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:56:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:56:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:56:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:56:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:56:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:56:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:56:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:56:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:56:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:56:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:56:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:56:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:56:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:56:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:56:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:56:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:56:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:56:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:56:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:56:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:56:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:56:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:56:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:56:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:56:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:56:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:56:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:56:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:56:22,774 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:56:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:56:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:56:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:56:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:56:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:56:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:56:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:56:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:56:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:56:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-13 00:56:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-13 00:56:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:56:22,778 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-13 00:56:22,778 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-13 00:56:22,778 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-13 00:56:22,779 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-13 00:56:22,780 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-13 00:56:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-13 00:56:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-13 00:56:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-13 00:56:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-13 00:56:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-13 00:56:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-13 00:56:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-13 00:56:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-13 00:56:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-13 00:56:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-13 00:56:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-13 00:56:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-13 00:56:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-13 00:56:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-13 00:56:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-13 00:56:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-13 00:56:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-13 00:56:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-13 00:56:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-13 00:56:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-13 00:56:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-13 00:56:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-13 00:56:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-13 00:56:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-13 00:56:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-13 00:56:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-13 00:56:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-13 00:56:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-13 00:56:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-13 00:56:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-10-13 00:56:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-10-13 00:56:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-13 00:56:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-13 00:56:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-10-13 00:56:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-10-13 00:56:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-10-13 00:56:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-13 00:56:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-13 00:56:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-13 00:56:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-13 00:56:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-13 00:56:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-13 00:56:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:56:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:56:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:56:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:56:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:56:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:56:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:56:23,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:56:23,459 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-13 00:56:23,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:23 BoogieIcfgContainer [2021-10-13 00:56:23,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:56:23,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:56:23,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:56:23,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:56:23,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:56:21" (1/3) ... [2021-10-13 00:56:23,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c19949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:56:23, skipping insertion in model container [2021-10-13 00:56:23,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:22" (2/3) ... [2021-10-13 00:56:23,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c19949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:56:23, skipping insertion in model container [2021-10-13 00:56:23,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:23" (3/3) ... [2021-10-13 00:56:23,472 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-3.i [2021-10-13 00:56:23,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:56:23,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-10-13 00:56:23,548 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:56:23,555 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, mConcurrency=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 [2021-10-13 00:56:23,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-13 00:56:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:56:23,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:56:23,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:23,609 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:23,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:23,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797383, now seen corresponding path program 1 times [2021-10-13 00:56:23,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:23,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674555268] [2021-10-13 00:56:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:23,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:24,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:24,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674555268] [2021-10-13 00:56:24,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674555268] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:24,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:24,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:56:24,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382920966] [2021-10-13 00:56:24,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:56:24,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:24,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:56:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:56:24,075 INFO L87 Difference]: Start difference. First operand has 40 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2021-10-13 00:56:24,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:24,226 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2021-10-13 00:56:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:56:24,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2021-10-13 00:56:24,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:24,239 INFO L225 Difference]: With dead ends: 35 [2021-10-13 00:56:24,239 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:56:24,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:56:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:56:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-13 00:56:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 28 states have internal predecessors, (28), 2 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) [2021-10-13 00:56:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-10-13 00:56:24,294 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 7 [2021-10-13 00:56:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:56:24,295 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-10-13 00:56:24,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2021-10-13 00:56:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-10-13 00:56:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:56:24,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:24,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:24,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:56:24,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:24,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797382, now seen corresponding path program 1 times [2021-10-13 00:56:24,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:24,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004086609] [2021-10-13 00:56:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:24,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:24,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:24,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004086609] [2021-10-13 00:56:24,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004086609] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:24,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:24,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:56:24,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387856542] [2021-10-13 00:56:24,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:56:24,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:56:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:56:24,443 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2021-10-13 00:56:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:24,509 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-10-13 00:56:24,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:56:24,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2021-10-13 00:56:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:24,511 INFO L225 Difference]: With dead ends: 27 [2021-10-13 00:56:24,511 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 00:56:24,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:56:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 00:56:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 00:56:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 23 states have internal predecessors, (23), 2 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) [2021-10-13 00:56:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-10-13 00:56:24,517 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 7 [2021-10-13 00:56:24,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:56:24,518 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-10-13 00:56:24,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2021-10-13 00:56:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-10-13 00:56:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:56:24,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:24,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:24,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:56:24,520 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:24,521 INFO L82 PathProgramCache]: Analyzing trace with hash 852652130, now seen corresponding path program 1 times [2021-10-13 00:56:24,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:24,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373394644] [2021-10-13 00:56:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:24,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:24,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:24,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373394644] [2021-10-13 00:56:24,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373394644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:24,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:56:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749541576] [2021-10-13 00:56:24,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:56:24,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:56:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:56:24,666 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-10-13 00:56:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:24,749 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-13 00:56:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:56:24,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 14 [2021-10-13 00:56:24,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:24,751 INFO L225 Difference]: With dead ends: 26 [2021-10-13 00:56:24,752 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 00:56:24,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:56:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 00:56:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-13 00:56:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 22 states have internal predecessors, (22), 2 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) [2021-10-13 00:56:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-13 00:56:24,757 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 14 [2021-10-13 00:56:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:56:24,758 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-13 00:56:24,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-10-13 00:56:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-13 00:56:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:56:24,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:24,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:24,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:56:24,760 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:24,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:24,761 INFO L82 PathProgramCache]: Analyzing trace with hash 662412320, now seen corresponding path program 1 times [2021-10-13 00:56:24,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:24,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996149877] [2021-10-13 00:56:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:24,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:24,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:24,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996149877] [2021-10-13 00:56:24,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996149877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:24,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:24,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:56:24,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202839912] [2021-10-13 00:56:24,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:56:24,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:56:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:56:24,914 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-10-13 00:56:25,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:25,010 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-10-13 00:56:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:56:25,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2021-10-13 00:56:25,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:25,012 INFO L225 Difference]: With dead ends: 25 [2021-10-13 00:56:25,012 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 00:56:25,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:56:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 00:56:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-13 00:56:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 21 states have internal predecessors, (21), 2 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) [2021-10-13 00:56:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-10-13 00:56:25,017 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 15 [2021-10-13 00:56:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:56:25,018 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-10-13 00:56:25,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-10-13 00:56:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-10-13 00:56:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:56:25,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:25,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:25,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:56:25,020 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:25,021 INFO L82 PathProgramCache]: Analyzing trace with hash -940054492, now seen corresponding path program 1 times [2021-10-13 00:56:25,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:25,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612813498] [2021-10-13 00:56:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:25,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:25,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:25,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612813498] [2021-10-13 00:56:25,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612813498] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:25,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:25,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:56:25,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636898724] [2021-10-13 00:56:25,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:56:25,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:56:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:56:25,138 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-13 00:56:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:25,224 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-10-13 00:56:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:56:25,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2021-10-13 00:56:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:25,226 INFO L225 Difference]: With dead ends: 24 [2021-10-13 00:56:25,226 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 00:56:25,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:56:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 00:56:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 00:56:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 2 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) [2021-10-13 00:56:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2021-10-13 00:56:25,231 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 16 [2021-10-13 00:56:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:56:25,232 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2021-10-13 00:56:25,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-13 00:56:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2021-10-13 00:56:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:56:25,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:25,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:25,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:56:25,234 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash 923081890, now seen corresponding path program 1 times [2021-10-13 00:56:25,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:25,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353413287] [2021-10-13 00:56:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:25,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:25,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:25,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353413287] [2021-10-13 00:56:25,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353413287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:25,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:25,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:56:25,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459870630] [2021-10-13 00:56:25,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:56:25,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:56:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:56:25,343 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 00:56:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:25,432 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-13 00:56:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:56:25,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 17 [2021-10-13 00:56:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:25,434 INFO L225 Difference]: With dead ends: 23 [2021-10-13 00:56:25,434 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 00:56:25,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:56:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 00:56:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 00:56:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 2 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) [2021-10-13 00:56:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-13 00:56:25,439 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 17 [2021-10-13 00:56:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:56:25,439 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-13 00:56:25,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 00:56:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-13 00:56:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:56:25,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:25,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:25,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:56:25,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:25,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1449232410, now seen corresponding path program 1 times [2021-10-13 00:56:25,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:25,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017188224] [2021-10-13 00:56:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:25,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:25,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:56:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:25,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:25,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017188224] [2021-10-13 00:56:25,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017188224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:25,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:25,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:56:25,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371653297] [2021-10-13 00:56:25,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:56:25,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:56:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:56:25,592 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-13 00:56:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:25,714 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-13 00:56:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:56:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-10-13 00:56:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:56:25,717 INFO L225 Difference]: With dead ends: 22 [2021-10-13 00:56:25,717 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 00:56:25,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:56:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 00:56:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-13 00:56:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 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) [2021-10-13 00:56:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-13 00:56:25,723 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 18 [2021-10-13 00:56:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:56:25,724 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-13 00:56:25,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-13 00:56:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-13 00:56:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:56:25,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:56:25,725 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:25,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:56:25,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr15ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 12 more)] === [2021-10-13 00:56:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:25,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1976531676, now seen corresponding path program 1 times [2021-10-13 00:56:25,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:25,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239683798] [2021-10-13 00:56:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:25,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:25,784 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:56:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:25,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:56:25,876 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:56:25,878 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr15ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:56:25,882 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:56:25,882 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:56:25,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:56:25,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:56:25,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:56:25,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:56:25,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 00:56:25,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 00:56:25,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 00:56:25,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 00:56:25,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:56:25,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:56:25,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:56:25,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:56:25,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:56:25,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:56:25,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:56:25,896 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:56:25,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:56:25 BoogieIcfgContainer [2021-10-13 00:56:25,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:56:25,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:56:25,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:56:25,936 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:56:25,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:23" (3/4) ... [2021-10-13 00:56:25,939 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:56:26,024 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:56:26,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:56:26,030 INFO L168 Benchmark]: Toolchain (without parser) took 4103.37 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 74.3 MB in the beginning and 80.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:56:26,030 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 104.9 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:56:26,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.70 ms. Allocated memory is still 104.9 MB. Free memory was 74.3 MB in the beginning and 71.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:56:26,032 INFO L168 Benchmark]: Boogie Preprocessor took 73.81 ms. Allocated memory is still 104.9 MB. Free memory was 71.6 MB in the beginning and 68.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:56:26,033 INFO L168 Benchmark]: RCFGBuilder took 846.25 ms. Allocated memory is still 104.9 MB. Free memory was 68.8 MB in the beginning and 46.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:56:26,033 INFO L168 Benchmark]: TraceAbstraction took 2471.50 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 45.8 MB in the beginning and 81.8 MB in the end (delta: -36.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:56:26,034 INFO L168 Benchmark]: Witness Printer took 91.39 ms. Allocated memory is still 125.8 MB. Free memory was 81.8 MB in the beginning and 80.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:56:26,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 104.9 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 607.70 ms. Allocated memory is still 104.9 MB. Free memory was 74.3 MB in the beginning and 71.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.81 ms. Allocated memory is still 104.9 MB. Free memory was 71.6 MB in the beginning and 68.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 846.25 ms. Allocated memory is still 104.9 MB. Free memory was 68.8 MB in the beginning and 46.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2471.50 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 45.8 MB in the beginning and 81.8 MB in the end (delta: -36.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 91.39 ms. Allocated memory is still 125.8 MB. Free memory was 81.8 MB in the beginning and 80.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 655]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L642-L649] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L650] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L651] data.str.p2 = &data VAL [data={3:0}] [L652] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}] [L652] void *ptr = data.p0; [L653] data.str.c[1] = sizeof data.str.p1 VAL [data={3:0}, ptr={-1:0}] [L654] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L654] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L654] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L654] free(data.p0) [L655] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L655] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L655] free(ptr) VAL [data={3:0}, ptr={-1:0}] - UnprovableResult [Line: 650]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 650]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 651]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 651]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 652]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 652]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 653]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 653]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 640]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 58 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 2347.3ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 20.8ms, AutomataDifference: 755.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 100 SDtfs, 94 SDslu, 176 SDs, 0 SdLazy, 355 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 392.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 426.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 56.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.3ms SsaConstructionTime, 217.7ms SatisfiabilityAnalysisTime, 787.9ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:56:26,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c377d1e-b37d-4e5f-91ca-a317fdc583d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...