./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0019-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/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_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/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_26701611-5c76-4cdc-900c-ac6b2d4ee553/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 c2707018625c82fb11b0c17a966b82b37a0c8e83 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:43:44,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:43:44,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:43:44,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:43:44,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:43:44,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:43:44,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:43:44,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:43:44,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:43:44,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:43:44,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:43:44,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:43:44,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:43:44,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:43:44,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:43:44,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:43:44,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:43:44,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:43:44,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:43:44,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:43:44,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:43:44,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:43:45,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:43:45,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:43:45,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:43:45,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:43:45,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:43:45,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:43:45,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:43:45,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:43:45,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:43:45,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:43:45,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:43:45,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:43:45,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:43:45,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:43:45,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:43:45,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:43:45,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:43:45,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:43:45,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:43:45,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:43:45,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:43:45,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:43:45,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:43:45,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:43:45,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:43:45,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:43:45,115 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:43:45,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:43:45,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:43:45,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:43:45,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:43:45,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:43:45,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:43:45,118 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:43:45,119 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:43:45,119 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:43:45,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:43:45,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:43:45,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:43:45,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:43:45,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:43:45,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:43:45,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:43:45,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:43:45,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:43:45,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:43:45,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:43:45,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:43:45,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:43:45,125 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_26701611-5c76-4cdc-900c-ac6b2d4ee553/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2707018625c82fb11b0c17a966b82b37a0c8e83 [2021-10-13 00:43:45,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:43:45,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:43:45,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:43:45,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:43:45,572 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:43:45,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety/test-0019-1.i [2021-10-13 00:43:45,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/data/5d601e09a/d251ef51fa1d42e4851964e287ad8a31/FLAG5c3fd01eb [2021-10-13 00:43:46,309 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:43:46,310 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/sv-benchmarks/c/memsafety/test-0019-1.i [2021-10-13 00:43:46,325 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/data/5d601e09a/d251ef51fa1d42e4851964e287ad8a31/FLAG5c3fd01eb [2021-10-13 00:43:46,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/data/5d601e09a/d251ef51fa1d42e4851964e287ad8a31 [2021-10-13 00:43:46,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:43:46,643 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:43:46,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:43:46,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:43:46,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:43:46,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:43:46" (1/1) ... [2021-10-13 00:43:46,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1751f6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:46, skipping insertion in model container [2021-10-13 00:43:46,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:43:46" (1/1) ... [2021-10-13 00:43:46,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:43:46,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:43:47,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:43:47,288 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:43:47,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:43:47,414 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:43:47,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47 WrapperNode [2021-10-13 00:43:47,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:43:47,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:43:47,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:43:47,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:43:47,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:43:47,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:43:47,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:43:47,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:43:47,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (1/1) ... [2021-10-13 00:43:47,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:43:47,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:43:47,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:43:47,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:43:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:43:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:43:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:43:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:43:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:43:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:43:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:43:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:43:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-10-13 00:43:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-10-13 00:43:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:43:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:43:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:43:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:43:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:43:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:43:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:43:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:43:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:43:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:43:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:43:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:43:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:43:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:43:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:43:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:43:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:43:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:43:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:43:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:43:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:43:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:43:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:43:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:43:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:43:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:43:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:43:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:43:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:43:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:43:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:43:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:43:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:43:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:43:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:43:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:43:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:43:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:43:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:43:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:43:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:43:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:43:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:43:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:43:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:43:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:43:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:43:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:43:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:43:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:43:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:43:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:43:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:43:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:43:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:43:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:43:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:43:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:43:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:43:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:43:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:43:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:43:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:43:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:43:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:43:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:43:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:43:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:43:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:43:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:43:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:43:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:43:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:43:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:43:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:43:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:43:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:43:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:43:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:43:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:43:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:43:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:43:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:43:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:43:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:43:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:43:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:43:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:43:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:43:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:43:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:43:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:43:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:43:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:43:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:43:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:43:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:43:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:43:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:43:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:43:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:43:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:43:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:43:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:43:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:43:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:43:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:43:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:43:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:43:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:43:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:43:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:43:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:43:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-10-13 00:43:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:43:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:43:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-10-13 00:43:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:43:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:43:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:43:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:43:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:43:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:43:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:43:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:43:48,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:43:48,404 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-13 00:43:48,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:43:48 BoogieIcfgContainer [2021-10-13 00:43:48,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:43:48,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:43:48,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:43:48,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:43:48,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:43:46" (1/3) ... [2021-10-13 00:43:48,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dfc201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:43:48, skipping insertion in model container [2021-10-13 00:43:48,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:43:47" (2/3) ... [2021-10-13 00:43:48,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dfc201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:43:48, skipping insertion in model container [2021-10-13 00:43:48,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:43:48" (3/3) ... [2021-10-13 00:43:48,419 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-1.i [2021-10-13 00:43:48,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:43:48,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-13 00:43:48,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:43:48,487 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 00:43:48,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-13 00:43:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 52 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-13 00:43:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:43:48,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:48,515 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:48,515 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:48,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:48,522 INFO L82 PathProgramCache]: Analyzing trace with hash 58108464, now seen corresponding path program 1 times [2021-10-13 00:43:48,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:48,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450314330] [2021-10-13 00:43:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:48,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:48,882 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 00:43:48,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:48,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450314330] [2021-10-13 00:43:48,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450314330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:48,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:48,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:43:48,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119200633] [2021-10-13 00:43:48,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:43:48,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:43:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:43:48,968 INFO L87 Difference]: Start difference. First operand has 61 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 52 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:43:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:49,267 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-10-13 00:43:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:43:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-13 00:43:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:49,279 INFO L225 Difference]: With dead ends: 57 [2021-10-13 00:43:49,280 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 00:43:49,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:43:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 00:43:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-13 00:43:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-10-13 00:43:49,324 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 9 [2021-10-13 00:43:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:49,325 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-10-13 00:43:49,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:43:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-10-13 00:43:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:43:49,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:49,327 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:49,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:43:49,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:49,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:49,329 INFO L82 PathProgramCache]: Analyzing trace with hash 58108465, now seen corresponding path program 1 times [2021-10-13 00:43:49,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:49,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067686272] [2021-10-13 00:43:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:49,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:49,586 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 00:43:49,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:49,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067686272] [2021-10-13 00:43:49,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067686272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:49,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:49,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:43:49,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968602410] [2021-10-13 00:43:49,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:43:49,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:43:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:43:49,598 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:43:49,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:49,896 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-10-13 00:43:49,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:43:49,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-13 00:43:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:49,901 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:43:49,901 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 00:43:49,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:43:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 00:43:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-13 00:43:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 43 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-10-13 00:43:49,925 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 9 [2021-10-13 00:43:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:49,925 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-10-13 00:43:49,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:43:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-10-13 00:43:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:43:49,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:49,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:49,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:43:49,928 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash 7659090, now seen corresponding path program 1 times [2021-10-13 00:43:49,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:49,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209505260] [2021-10-13 00:43:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:49,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:43:50,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:50,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209505260] [2021-10-13 00:43:50,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209505260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:50,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:50,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:43:50,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805300565] [2021-10-13 00:43:50,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:43:50,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:43:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:43:50,177 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:43:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:50,501 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-10-13 00:43:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:43:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 00:43:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:50,512 INFO L225 Difference]: With dead ends: 50 [2021-10-13 00:43:50,512 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 00:43:50,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 155.5ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:43:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 00:43:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-13 00:43:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-13 00:43:50,527 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 11 [2021-10-13 00:43:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:50,527 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-13 00:43:50,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:43:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-13 00:43:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:43:50,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:50,530 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 00:43:50,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:43:50,530 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:50,533 INFO L82 PathProgramCache]: Analyzing trace with hash 581041713, now seen corresponding path program 1 times [2021-10-13 00:43:50,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:50,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693495172] [2021-10-13 00:43:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:50,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:50,735 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 00:43:50,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:50,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693495172] [2021-10-13 00:43:50,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693495172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:50,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:50,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:43:50,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337424878] [2021-10-13 00:43:50,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:43:50,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:43:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:43:50,739 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:50,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:50,919 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-10-13 00:43:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:43:50,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-13 00:43:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:50,923 INFO L225 Difference]: With dead ends: 46 [2021-10-13 00:43:50,924 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 00:43:50,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:43:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 00:43:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-13 00:43:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 38 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-10-13 00:43:50,946 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 19 [2021-10-13 00:43:50,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:50,947 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-10-13 00:43:50,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:50,947 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-10-13 00:43:50,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:43:50,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:50,949 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 00:43:50,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:43:50,949 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:50,950 INFO L82 PathProgramCache]: Analyzing trace with hash 581041714, now seen corresponding path program 1 times [2021-10-13 00:43:50,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:50,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187253552] [2021-10-13 00:43:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:50,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:51,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:51,092 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 00:43:51,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:51,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187253552] [2021-10-13 00:43:51,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187253552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:51,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:51,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:43:51,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417973499] [2021-10-13 00:43:51,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:43:51,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:43:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:43:51,096 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:51,277 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-13 00:43:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:43:51,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-13 00:43:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:51,283 INFO L225 Difference]: With dead ends: 42 [2021-10-13 00:43:51,283 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 00:43:51,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:43:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 00:43:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 00:43:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.25) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-13 00:43:51,299 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 19 [2021-10-13 00:43:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:51,300 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-13 00:43:51,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-13 00:43:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 00:43:51,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:51,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:51,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:43:51,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:51,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2120331936, now seen corresponding path program 1 times [2021-10-13 00:43:51,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:51,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883311592] [2021-10-13 00:43:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:51,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:51,715 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 00:43:51,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:51,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883311592] [2021-10-13 00:43:51,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883311592] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:51,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:51,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:43:51,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743525604] [2021-10-13 00:43:51,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:43:51,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:43:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:43:51,718 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:52,158 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-10-13 00:43:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:43:52,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-10-13 00:43:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:52,160 INFO L225 Difference]: With dead ends: 41 [2021-10-13 00:43:52,160 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 00:43:52,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 354.2ms TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:43:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 00:43:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 00:43:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-10-13 00:43:52,166 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 26 [2021-10-13 00:43:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:52,167 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-10-13 00:43:52,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-10-13 00:43:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:43:52,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:52,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:52,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:43:52,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:52,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:52,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1305780487, now seen corresponding path program 1 times [2021-10-13 00:43:52,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:52,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046352396] [2021-10-13 00:43:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:52,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:52,567 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 00:43:52,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:52,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046352396] [2021-10-13 00:43:52,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046352396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:52,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:52,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:43:52,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476100348] [2021-10-13 00:43:52,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:43:52,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:43:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:43:52,577 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:53,004 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-13 00:43:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:43:53,005 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-10-13 00:43:53,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:53,006 INFO L225 Difference]: With dead ends: 40 [2021-10-13 00:43:53,006 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 00:43:53,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 340.7ms TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:43:53,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 00:43:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-13 00:43:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-13 00:43:53,011 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 27 [2021-10-13 00:43:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:53,012 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-13 00:43:53,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-13 00:43:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 00:43:53,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:53,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:53,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:43:53,020 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr10ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1824489342, now seen corresponding path program 1 times [2021-10-13 00:43:53,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:53,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551186642] [2021-10-13 00:43:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:53,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:53,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:53,408 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 00:43:53,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:53,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551186642] [2021-10-13 00:43:53,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551186642] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:53,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:53,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:43:53,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257861889] [2021-10-13 00:43:53,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:43:53,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:53,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:43:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:43:53,413 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:53,789 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-13 00:43:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:43:53,790 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-10-13 00:43:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:53,791 INFO L225 Difference]: With dead ends: 39 [2021-10-13 00:43:53,791 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 00:43:53,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 305.5ms TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:43:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 00:43:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-13 00:43:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-10-13 00:43:53,796 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 28 [2021-10-13 00:43:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:53,797 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-10-13 00:43:53,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:43:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-10-13 00:43:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 00:43:53,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:53,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:53,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:43:53,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash -725172444, now seen corresponding path program 1 times [2021-10-13 00:43:53,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:53,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316541482] [2021-10-13 00:43:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:53,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 00:43:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:54,297 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 00:43:54,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:54,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316541482] [2021-10-13 00:43:54,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316541482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:54,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:54,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-10-13 00:43:54,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44466781] [2021-10-13 00:43:54,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:43:54,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:54,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:43:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:43:54,302 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:55,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:55,021 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2021-10-13 00:43:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:43:55,022 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-10-13 00:43:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:55,023 INFO L225 Difference]: With dead ends: 41 [2021-10-13 00:43:55,023 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 00:43:55,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 613.7ms TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 00:43:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 00:43:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-13 00:43:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2021-10-13 00:43:55,029 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 29 [2021-10-13 00:43:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:55,029 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2021-10-13 00:43:55,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2021-10-13 00:43:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 00:43:55,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:55,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:55,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:43:55,032 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr11ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:55,032 INFO L82 PathProgramCache]: Analyzing trace with hash -724594661, now seen corresponding path program 1 times [2021-10-13 00:43:55,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:55,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227290345] [2021-10-13 00:43:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:55,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:55,313 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 00:43:55,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:55,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227290345] [2021-10-13 00:43:55,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227290345] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:55,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:55,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:43:55,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420235383] [2021-10-13 00:43:55,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:43:55,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:55,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:43:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:43:55,316 INFO L87 Difference]: Start difference. First operand 39 states and 38 transitions. Second operand has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:43:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:55,713 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2021-10-13 00:43:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:43:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-10-13 00:43:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:55,715 INFO L225 Difference]: With dead ends: 38 [2021-10-13 00:43:55,715 INFO L226 Difference]: Without dead ends: 38 [2021-10-13 00:43:55,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 342.5ms TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:43:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-13 00:43:55,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-13 00:43:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 30 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2021-10-13 00:43:55,720 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 29 [2021-10-13 00:43:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:55,720 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2021-10-13 00:43:55,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:43:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2021-10-13 00:43:55,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:43:55,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:55,727 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:55,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:43:55,728 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_dataErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:55,729 INFO L82 PathProgramCache]: Analyzing trace with hash -987597916, now seen corresponding path program 1 times [2021-10-13 00:43:55,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:55,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081988808] [2021-10-13 00:43:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:55,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:56,040 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 00:43:56,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:56,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081988808] [2021-10-13 00:43:56,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081988808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:56,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:56,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:43:56,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537904509] [2021-10-13 00:43:56,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:43:56,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:43:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:43:56,045 INFO L87 Difference]: Start difference. First operand 38 states and 37 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:43:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:56,458 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2021-10-13 00:43:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:43:56,459 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-10-13 00:43:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:56,460 INFO L225 Difference]: With dead ends: 37 [2021-10-13 00:43:56,460 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 00:43:56,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 341.3ms TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:43:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 00:43:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 00:43:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2021-10-13 00:43:56,465 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 30 [2021-10-13 00:43:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:56,465 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2021-10-13 00:43:56,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:43:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2021-10-13 00:43:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:43:56,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:56,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:56,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:43:56,468 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_dataErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash -550764227, now seen corresponding path program 1 times [2021-10-13 00:43:56,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:56,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652187703] [2021-10-13 00:43:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:56,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:56,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:57,098 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 00:43:57,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:57,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652187703] [2021-10-13 00:43:57,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652187703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:57,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:57,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-10-13 00:43:57,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226562716] [2021-10-13 00:43:57,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:43:57,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:43:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:43:57,101 INFO L87 Difference]: Start difference. First operand 37 states and 36 transitions. Second operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:43:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:58,066 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2021-10-13 00:43:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 00:43:58,067 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2021-10-13 00:43:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:58,068 INFO L225 Difference]: With dead ends: 36 [2021-10-13 00:43:58,068 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 00:43:58,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 932.0ms TimeCoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 00:43:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 00:43:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 00:43:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.0) internal successors, (28), 28 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:43:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 35 transitions. [2021-10-13 00:43:58,074 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 35 transitions. Word has length 31 [2021-10-13 00:43:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:58,074 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 35 transitions. [2021-10-13 00:43:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:43:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2021-10-13 00:43:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 00:43:58,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:58,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:58,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:43:58,077 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr4ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-10-13 00:43:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:58,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2060273419, now seen corresponding path program 1 times [2021-10-13 00:43:58,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:58,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441915681] [2021-10-13 00:43:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:58,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:43:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:43:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 00:43:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:44:00,600 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 00:44:00,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:44:00,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441915681] [2021-10-13 00:44:00,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441915681] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:44:00,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:44:00,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-10-13 00:44:00,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932037951] [2021-10-13 00:44:00,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 00:44:00,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:44:00,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 00:44:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:44:00,604 INFO L87 Difference]: Start difference. First operand 36 states and 35 transitions. Second operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:44:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:44:02,806 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2021-10-13 00:44:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 00:44:02,807 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2021-10-13 00:44:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:44:02,807 INFO L225 Difference]: With dead ends: 35 [2021-10-13 00:44:02,807 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:44:02,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2715.4ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 00:44:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:44:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:44:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:44:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:44:02,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-13 00:44:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:44:02,810 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:44:02,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:44:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:44:02,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:44:02,812 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:44:02,813 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:44:02,813 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:44:02,814 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:44:02,814 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:44:02,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr0REQUIRES_VIOLATION [2021-10-13 00:44:02,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr1REQUIRES_VIOLATION [2021-10-13 00:44:02,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr2REQUIRES_VIOLATION [2021-10-13 00:44:02,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr3REQUIRES_VIOLATION [2021-10-13 00:44:02,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr0REQUIRES_VIOLATION [2021-10-13 00:44:02,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr1REQUIRES_VIOLATION [2021-10-13 00:44:02,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr2REQUIRES_VIOLATION [2021-10-13 00:44:02,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr3REQUIRES_VIOLATION [2021-10-13 00:44:02,818 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr4REQUIRES_VIOLATION [2021-10-13 00:44:02,818 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr5REQUIRES_VIOLATION [2021-10-13 00:44:02,818 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr6REQUIRES_VIOLATION [2021-10-13 00:44:02,819 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr7REQUIRES_VIOLATION [2021-10-13 00:44:02,819 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:44:02,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:44:02,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:44:02,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:44:02,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:44:02,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:44:02,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:44:02,827 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:44:02,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:44:02 BoogieIcfgContainer [2021-10-13 00:44:02,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:44:02,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:44:02,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:44:02,832 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:44:02,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:43:48" (3/4) ... [2021-10-13 00:44:02,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:44:02,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-13 00:44:02,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-13 00:44:02,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-13 00:44:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-13 00:44:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-13 00:44:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-13 00:44:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_data [2021-10-13 00:44:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-13 00:44:02,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-13 00:44:02,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_data [2021-10-13 00:44:02,866 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-13 00:44:02,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:44:02,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 00:44:02,868 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:44:02,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:44:02,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:44:02,909 INFO L168 Benchmark]: Toolchain (without parser) took 16264.79 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 80.4 MB in the beginning and 134.9 MB in the end (delta: -54.5 MB). Peak memory consumption was 85.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:44:02,910 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 89.7 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:44:02,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.62 ms. Allocated memory is still 117.4 MB. Free memory was 80.1 MB in the beginning and 86.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:44:02,912 INFO L168 Benchmark]: Boogie Preprocessor took 97.67 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 83.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:44:02,912 INFO L168 Benchmark]: RCFGBuilder took 892.07 ms. Allocated memory is still 117.4 MB. Free memory was 83.7 MB in the beginning and 63.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:44:02,913 INFO L168 Benchmark]: TraceAbstraction took 14421.59 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 62.7 MB in the beginning and 42.9 MB in the end (delta: 19.8 MB). Peak memory consumption was 68.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:44:02,914 INFO L168 Benchmark]: Witness Printer took 75.64 ms. Allocated memory is still 163.6 MB. Free memory was 42.9 MB in the beginning and 134.9 MB in the end (delta: -92.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:44:02,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 89.7 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 766.62 ms. Allocated memory is still 117.4 MB. Free memory was 80.1 MB in the beginning and 86.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.67 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 83.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 892.07 ms. Allocated memory is still 117.4 MB. Free memory was 83.7 MB in the beginning and 63.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14421.59 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 62.7 MB in the beginning and 42.9 MB in the end (delta: 19.8 MB). Peak memory consumption was 68.9 MB. Max. memory is 16.1 GB. * Witness Printer took 75.64 ms. Allocated memory is still 163.6 MB. Free memory was 42.9 MB in the beginning and 134.9 MB in the end (delta: -92.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 79 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 14349.5ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 32.2ms, AutomataDifference: 7343.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 318 SDtfs, 355 SDslu, 1376 SDs, 0 SdLazy, 3103 SolverSat, 170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2821.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 6467.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 123.9ms AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.6ms SsaConstructionTime, 448.8ms SatisfiabilityAnalysisTime, 5942.5ms InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 3526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 23 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 00:44:02,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26701611-5c76-4cdc-900c-ac6b2d4ee553/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...