./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/relax-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg --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 4fcae0c4d0ca1fc30eac1578cd8b45001717e96b8c9c5f68d5df56e6c4fcd72c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:57:21,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:57:21,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:57:21,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:57:21,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:57:21,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:57:21,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:57:21,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:57:21,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:57:21,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:57:21,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:57:21,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:57:21,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:57:21,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:57:21,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:57:21,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:57:21,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:57:21,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:57:21,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:57:21,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:57:21,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:57:21,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:57:21,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:57:21,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:57:21,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:57:21,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:57:21,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:57:21,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:57:21,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:57:21,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:57:21,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:57:21,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:57:21,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:57:21,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:57:21,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:57:21,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:57:21,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:57:21,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:57:21,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:57:21,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:57:21,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:57:21,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:57:21,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:57:21,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:57:21,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:57:21,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:57:21,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:57:21,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:57:21,678 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:57:21,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:57:21,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:57:21,678 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:57:21,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:57:21,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:57:21,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:57:21,681 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:57:21,681 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:57:21,681 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:57:21,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:57:21,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:57:21,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:57:21,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:57:21,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:57:21,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:57:21,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:57:21,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:57:21,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:57:21,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:57:21,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:57:21,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:57:21,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:57:21,686 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_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fcae0c4d0ca1fc30eac1578cd8b45001717e96b8c9c5f68d5df56e6c4fcd72c [2021-10-28 08:57:22,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:57:22,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:57:22,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:57:22,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:57:22,090 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:57:22,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/array-examples/relax-1.i [2021-10-28 08:57:22,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/data/24ff9bbf6/2a9ddb9230674d0db06c5d2a611de913/FLAG9aa80fb56 [2021-10-28 08:57:22,871 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:57:22,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/sv-benchmarks/c/array-examples/relax-1.i [2021-10-28 08:57:22,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/data/24ff9bbf6/2a9ddb9230674d0db06c5d2a611de913/FLAG9aa80fb56 [2021-10-28 08:57:23,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/data/24ff9bbf6/2a9ddb9230674d0db06c5d2a611de913 [2021-10-28 08:57:23,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:57:23,136 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:57:23,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:57:23,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:57:23,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:57:23,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aaf3a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23, skipping insertion in model container [2021-10-28 08:57:23,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:57:23,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:57:23,393 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-10-28 08:57:23,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:57:23,582 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:57:23,611 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-10-28 08:57:23,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:57:23,743 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:57:23,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23 WrapperNode [2021-10-28 08:57:23,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:57:23,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:57:23,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:57:23,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:57:23,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:57:23,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:57:23,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:57:23,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:57:23,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (1/1) ... [2021-10-28 08:57:23,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:57:23,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:57:23,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:57:23,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:57:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:57:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:57:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-10-28 08:57:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:57:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-28 08:57:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:57:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:57:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2021-10-28 08:57:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:57:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:57:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-10-28 08:57:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-10-28 08:57:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:57:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:57:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:57:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:57:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:57:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:57:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-28 08:57:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:57:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:57:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:57:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:57:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:57:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:57:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:57:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:57:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:57:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:57:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:57:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:57:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:57:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:57:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:57:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:57:24,034 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:57:24,034 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:57:24,034 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:57:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:57:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:57:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:57:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:57:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:57:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:57:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:57:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:57:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:57:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:57:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:57:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:57:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:57:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:57:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:57:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:57:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:57:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:57:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:57:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:57:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:57:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:57:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:57:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:57:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:57:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:57:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:57:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:57:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:57:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:57:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:57:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:57:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:57:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:57:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:57:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:57:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:57:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 08:57:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:57:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:57:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:57:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:57:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:57:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:57:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:57:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:57:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:57:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:57:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:57:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:57:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:57:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:57:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:57:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:57:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:57:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:57:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:57:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:57:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:57:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:57:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:57:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:57:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:57:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:57:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:57:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:57:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:57:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:57:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:57:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:57:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:57:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:57:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:57:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:57:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:57:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:57:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:57:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:57:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:57:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:57:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:57:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:57:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2021-10-28 08:57:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:57:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:57:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:57:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:57:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:57:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:57:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:57:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:57:24,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:57:24,900 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 08:57:24,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:57:24 BoogieIcfgContainer [2021-10-28 08:57:24,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:57:24,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:57:24,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:57:24,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:57:24,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:57:23" (1/3) ... [2021-10-28 08:57:24,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7886f8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:57:24, skipping insertion in model container [2021-10-28 08:57:24,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:57:23" (2/3) ... [2021-10-28 08:57:24,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7886f8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:57:24, skipping insertion in model container [2021-10-28 08:57:24,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:57:24" (3/3) ... [2021-10-28 08:57:24,913 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-1.i [2021-10-28 08:57:24,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:57:24,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-10-28 08:57:24,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:57:24,983 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:57:24,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-28 08:57:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 57 states have (on average 1.912280701754386) internal successors, (109), 90 states have internal predecessors, (109), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 08:57:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:57:25,014 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:25,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:25,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting is_relaxed_prefixErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 08:57:25,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:25,023 INFO L85 PathProgramCache]: Analyzing trace with hash -3143168, now seen corresponding path program 1 times [2021-10-28 08:57:25,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:25,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759381083] [2021-10-28 08:57:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:25,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:57:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:57:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:57:25,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:57:25,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759381083] [2021-10-28 08:57:25,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759381083] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:57:25,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:25,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:57:25,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208758680] [2021-10-28 08:57:25,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:57:25,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:57:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:57:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:57:25,632 INFO L87 Difference]: Start difference. First operand has 103 states, 57 states have (on average 1.912280701754386) internal successors, (109), 90 states have internal predecessors, (109), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-10-28 08:57:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:57:26,140 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2021-10-28 08:57:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:57:26,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2021-10-28 08:57:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:57:26,154 INFO L225 Difference]: With dead ends: 96 [2021-10-28 08:57:26,154 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 08:57:26,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:57:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 08:57:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-28 08:57:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 81 states have internal predecessors, (95), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 08:57:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2021-10-28 08:57:26,208 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 11 [2021-10-28 08:57:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:57:26,209 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2021-10-28 08:57:26,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-10-28 08:57:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2021-10-28 08:57:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:57:26,210 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:57:26,210 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:57:26,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:57:26,211 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting is_relaxed_prefixErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 08:57:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:57:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash -3143167, now seen corresponding path program 1 times [2021-10-28 08:57:26,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:57:26,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533778918] [2021-10-28 08:57:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:57:26,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:57:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:57:26,274 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:57:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:57:26,377 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:57:26,377 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:57:26,379 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location is_relaxed_prefixErr1REQUIRES_VIOLATION [2021-10-28 08:57:26,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:57:26,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr0REQUIRES_VIOLATION [2021-10-28 08:57:26,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr2REQUIRES_VIOLATION [2021-10-28 08:57:26,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr3REQUIRES_VIOLATION [2021-10-28 08:57:26,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:57:26,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:57:26,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:57:26,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:57:26,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:57:26,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:57:26,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 08:57:26,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 08:57:26,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 08:57:26,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 08:57:26,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 08:57:26,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 08:57:26,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 08:57:26,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 08:57:26,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 08:57:26,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 08:57:26,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 08:57:26,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 08:57:26,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 08:57:26,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 08:57:26,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:57:26,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:57:26,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:57:26,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:57:26,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:57:26,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:57:26,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:57:26,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:57:26,396 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:57:26,401 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:57:26,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:57:26 BoogieIcfgContainer [2021-10-28 08:57:26,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:57:26,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:57:26,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:57:26,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:57:26,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:57:24" (3/4) ... [2021-10-28 08:57:26,428 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:57:26,470 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d966cd-bc06-47b1-be96-03d785b48ca9/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:57:26,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:57:26,472 INFO L168 Benchmark]: Toolchain (without parser) took 3334.43 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 58.7 MB in the beginning and 66.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:26,473 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 90.2 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:57:26,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.16 ms. Allocated memory is still 90.2 MB. Free memory was 58.5 MB in the beginning and 41.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:26,475 INFO L168 Benchmark]: Boogie Preprocessor took 145.53 ms. Allocated memory is still 90.2 MB. Free memory was 41.7 MB in the beginning and 39.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:26,476 INFO L168 Benchmark]: RCFGBuilder took 1008.36 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 39.1 MB in the beginning and 71.5 MB in the end (delta: -32.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:26,477 INFO L168 Benchmark]: TraceAbstraction took 1519.31 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 68.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:26,477 INFO L168 Benchmark]: Witness Printer took 45.36 ms. Allocated memory is still 113.2 MB. Free memory was 68.1 MB in the beginning and 66.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:26,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 90.2 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 605.16 ms. Allocated memory is still 90.2 MB. Free memory was 58.5 MB in the beginning and 41.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 145.53 ms. Allocated memory is still 90.2 MB. Free memory was 41.7 MB in the beginning and 39.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1008.36 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 39.1 MB in the beginning and 71.5 MB in the end (delta: -32.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1519.31 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 68.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. * Witness Printer took 45.36 ms. Allocated memory is still 113.2 MB. Free memory was 68.1 MB in the beginning and 66.0 MB in the end (delta: 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 584]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L600] int *pat=malloc(sizeof(int)*pat_len); [L601] int *a=malloc(sizeof(int)*a_len); [L602] CALL is_relaxed_prefix(pat, pat_len, a, a_len) VAL [\old(a_length)=536870912, \old(pat_length)=536870913, a={-1:0}, pat={-2:0}] [L579] COND FALSE !(pat_length>a_length+1) [L581] int shift=0; [L582] int i=0; VAL [\old(a_length)=536870912, \old(pat_length)=536870913, a={-1:0}, a={-1:0}, a_length=536870912, i=0, pat={-2:0}, pat={-2:0}, pat_length=536870913, shift=0] [L582] COND TRUE i