./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 900cc87915f78d8f9b7a01f7b163a61da3f269083f153e9256c9ee6a33b8e554 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:42:37,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:42:37,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:42:37,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:42:37,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:42:37,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:42:37,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:42:37,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:42:37,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:42:37,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:42:37,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:42:37,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:42:37,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:42:37,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:42:37,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:42:37,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:42:37,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:42:37,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:42:37,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:42:37,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:42:37,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:42:37,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:42:37,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:42:37,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:42:37,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:42:37,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:42:37,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:42:37,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:42:37,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:42:37,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:42:37,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:42:37,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:42:37,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:42:37,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:42:37,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:42:37,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:42:37,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:42:37,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:42:37,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:42:37,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:42:37,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:42:37,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:42:37,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:42:37,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:42:37,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:42:37,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:42:37,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:42:37,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:42:37,663 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:42:37,663 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:42:37,664 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:42:37,664 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:42:37,665 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:42:37,665 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:42:37,666 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:42:37,666 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:42:37,666 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:42:37,666 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:42:37,667 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:42:37,667 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:42:37,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:42:37,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:42:37,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:42:37,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:42:37,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:42:37,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:42:37,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:42:37,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:42:37,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:42:37,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:42:37,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:42:37,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:42:37,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:42:37,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:42:37,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:37,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:42:37,674 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:42:37,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:42:37,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:42:37,674 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:42:37,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:42:37,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:42:37,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:42:37,676 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_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 900cc87915f78d8f9b7a01f7b163a61da3f269083f153e9256c9ee6a33b8e554 [2022-11-03 01:42:37,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:42:37,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:42:37,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:42:37,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:42:38,000 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:42:38,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-regression/1_3.i [2022-11-03 01:42:38,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/data/7daca6cc2/92b015e4b25245409d13a737c8f2663b/FLAG8c167acc0 [2022-11-03 01:42:38,519 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:42:38,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/sv-benchmarks/c/ldv-regression/1_3.i [2022-11-03 01:42:38,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/data/7daca6cc2/92b015e4b25245409d13a737c8f2663b/FLAG8c167acc0 [2022-11-03 01:42:38,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/data/7daca6cc2/92b015e4b25245409d13a737c8f2663b [2022-11-03 01:42:38,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:42:38,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:42:38,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:38,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:42:38,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:42:38,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:38" (1/1) ... [2022-11-03 01:42:38,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fd8147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:38, skipping insertion in model container [2022-11-03 01:42:38,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:38" (1/1) ... [2022-11-03 01:42:38,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:42:38,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:42:39,103 WARN L230 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_12d917b1-7841-4e32-b876-5cf429eff9ac/sv-benchmarks/c/ldv-regression/1_3.i[285,298] [2022-11-03 01:42:39,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:39,158 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:42:39,172 WARN L230 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_12d917b1-7841-4e32-b876-5cf429eff9ac/sv-benchmarks/c/ldv-regression/1_3.i[285,298] [2022-11-03 01:42:39,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:39,197 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:42:39,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39 WrapperNode [2022-11-03 01:42:39,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:39,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:39,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:42:39,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:42:39,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,239 INFO L138 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 45 [2022-11-03 01:42:39,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:39,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:42:39,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:42:39,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:42:39,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:42:39,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:42:39,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:42:39,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:42:39,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (1/1) ... [2022-11-03 01:42:39,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:39,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:39,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:42:39,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:42:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2022-11-03 01:42:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2022-11-03 01:42:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:42:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:42:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:42:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:42:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:42:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:42:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:42:39,457 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:42:39,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:42:39,571 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:42:39,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:42:39,607 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:42:39,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:39 BoogieIcfgContainer [2022-11-03 01:42:39,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:42:39,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:42:39,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:42:39,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:42:39,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:42:38" (1/3) ... [2022-11-03 01:42:39,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313aee03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:42:39, skipping insertion in model container [2022-11-03 01:42:39,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:39" (2/3) ... [2022-11-03 01:42:39,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313aee03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:42:39, skipping insertion in model container [2022-11-03 01:42:39,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:39" (3/3) ... [2022-11-03 01:42:39,618 INFO L112 eAbstractionObserver]: Analyzing ICFG 1_3.i [2022-11-03 01:42:39,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:42:39,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:42:39,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:42:39,746 INFO L357 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63dea49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:42:39,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:42:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:42:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:42:39,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:39,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:42:39,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting freePtrErr0ASSERT_VIOLATIONERROR_FUNCTION === [freePtrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash 61756905, now seen corresponding path program 1 times [2022-11-03 01:42:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284099346] [2022-11-03 01:42:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:42:40,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:40,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284099346] [2022-11-03 01:42:40,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284099346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:40,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:40,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:42:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732330044] [2022-11-03 01:42:40,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:40,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:40,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:40,340 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:40,413 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-11-03 01:42:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:40,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 01:42:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:40,423 INFO L225 Difference]: With dead ends: 23 [2022-11-03 01:42:40,423 INFO L226 Difference]: Without dead ends: 11 [2022-11-03 01:42:40,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:42:40,430 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:40,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:42:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-03 01:42:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-03 01:42:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:42:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2022-11-03 01:42:40,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 5 [2022-11-03 01:42:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:40,487 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2022-11-03 01:42:40,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2022-11-03 01:42:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:42:40,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:40,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:40,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:42:40,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting freePtrErr0ASSERT_VIOLATIONERROR_FUNCTION === [freePtrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2078263481, now seen corresponding path program 1 times [2022-11-03 01:42:40,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:40,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167453602] [2022-11-03 01:42:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:40,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:42:40,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:42:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:42:40,590 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:42:40,590 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:42:40,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location freePtrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:42:40,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:42:40,608 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 01:42:40,612 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:42:40,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:42:40 BoogieIcfgContainer [2022-11-03 01:42:40,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:42:40,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:42:40,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:42:40,653 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:42:40,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:39" (3/4) ... [2022-11-03 01:42:40,655 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 01:42:40,691 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:42:40,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:42:40,692 INFO L158 Benchmark]: Toolchain (without parser) took 1775.30ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 63.5MB in the beginning and 77.4MB in the end (delta: -13.9MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2022-11-03 01:42:40,693 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory was 80.1MB in the beginning and 80.1MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:42:40,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.51ms. Allocated memory is still 100.7MB. Free memory was 63.2MB in the beginning and 75.5MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:42:40,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.90ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 74.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:42:40,694 INFO L158 Benchmark]: Boogie Preprocessor took 48.42ms. Allocated memory is still 100.7MB. Free memory was 74.0MB in the beginning and 72.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:42:40,695 INFO L158 Benchmark]: RCFGBuilder took 319.96ms. Allocated memory is still 100.7MB. Free memory was 72.9MB in the beginning and 61.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:42:40,695 INFO L158 Benchmark]: TraceAbstraction took 1038.41ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 60.5MB in the beginning and 79.5MB in the end (delta: -18.9MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2022-11-03 01:42:40,696 INFO L158 Benchmark]: Witness Printer took 38.86ms. Allocated memory is still 123.7MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:42:40,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory was 80.1MB in the beginning and 80.1MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.51ms. Allocated memory is still 100.7MB. Free memory was 63.2MB in the beginning and 75.5MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.90ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 74.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.42ms. Allocated memory is still 100.7MB. Free memory was 74.0MB in the beginning and 72.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.96ms. Allocated memory is still 100.7MB. Free memory was 72.9MB in the beginning and 61.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1038.41ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 60.5MB in the beginning and 79.5MB in the end (delta: -18.9MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Witness Printer took 38.86ms. Allocated memory is still 123.7MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] rr * ptr1 = 0; [L53] CALL, EXPR getPtr() [L39] CALL, EXPR getrr() [L32] rr * r = (rr *)malloc(sizeof *r); [L33] r -> state = 0 [L34] return r; [L39] RET, EXPR getrr() [L39] rr * r = getrr(); [L40] r -> state = 1 [L41] return r; [L53] RET, EXPR getPtr() [L53] ptr1 = getPtr() [L54] CALL freePtr(ptr1) [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L46] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L47] ptr -> state = 2 [L54] RET freePtr(ptr1) VAL [ptr1={-1:0}] [L56] CALL freePtr(ptr1) [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L46] (ptr -> state == 1) ? (0) : __blast_assert () [L46] CALL __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 01:42:40,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d917b1-7841-4e32-b876-5cf429eff9ac/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE