./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0019-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad --- 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-4e7fbc6 [2022-11-23 15:28:22,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:28:22,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:28:22,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:28:22,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:28:22,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:28:22,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:28:22,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:28:22,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:28:22,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:28:22,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:28:22,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:28:22,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:28:22,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:28:22,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:28:22,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:28:22,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:28:22,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:28:22,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:28:22,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:28:22,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:28:22,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:28:22,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:28:22,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:28:22,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:28:22,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:28:22,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:28:22,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:28:22,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:28:22,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:28:22,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:28:22,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:28:22,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:28:22,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:28:22,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:28:22,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:28:22,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:28:22,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:28:22,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:28:22,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:28:22,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:28:22,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 15:28:22,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:28:22,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:28:22,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:28:22,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:28:22,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:28:22,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:28:22,945 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:28:22,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:28:22,945 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:28:22,946 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:28:22,947 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:28:22,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:28:22,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:28:22,948 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:28:22,949 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:28:22,949 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:28:22,949 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:28:22,950 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:28:22,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:28:22,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:28:22,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:28:22,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:28:22,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:28:22,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:28:22,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:28:22,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:28:22,954 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:28:22,954 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:28:22,954 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 15:28:22,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:28:22,955 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:28:22,955 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:28:22,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:28:22,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:28:22,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:28:22,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:28:22,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:28:22,957 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:28:22,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:28:22,957 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:28:22,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:28:22,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:28:22,958 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_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2022-11-23 15:28:23,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:28:23,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:28:23,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:28:23,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:28:23,346 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:28:23,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/memsafety/test-0019-2.i [2022-11-23 15:28:26,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:28:27,067 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:28:27,068 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/sv-benchmarks/c/memsafety/test-0019-2.i [2022-11-23 15:28:27,094 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data/45400bf9e/8e76bdd0a1934a7fb5f9ed50336d0a94/FLAG1cdccd38d [2022-11-23 15:28:27,114 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data/45400bf9e/8e76bdd0a1934a7fb5f9ed50336d0a94 [2022-11-23 15:28:27,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:28:27,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:28:27,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:28:27,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:28:27,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:28:27,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4d5113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27, skipping insertion in model container [2022-11-23 15:28:27,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:28:27,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:28:27,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:28:27,632 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:28:27,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:28:27,716 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:28:27,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27 WrapperNode [2022-11-23 15:28:27,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:28:27,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:28:27,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:28:27,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:28:27,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,767 INFO L138 Inliner]: procedures = 125, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2022-11-23 15:28:27,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:28:27,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:28:27,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:28:27,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:28:27,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:28:27,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:28:27,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:28:27,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:28:27,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (1/1) ... [2022-11-23 15:28:27,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:28:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:28:27,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:28:27,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:28:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:28:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:28:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:28:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:28:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:28:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:28:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:28:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:28:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:28:28,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:28:28,021 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:28:28,350 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:28:28,444 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:28:28,444 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:28:28,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:28 BoogieIcfgContainer [2022-11-23 15:28:28,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:28:28,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:28:28,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:28:28,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:28:28,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:28:27" (1/3) ... [2022-11-23 15:28:28,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405c4ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:28, skipping insertion in model container [2022-11-23 15:28:28,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:27" (2/3) ... [2022-11-23 15:28:28,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405c4ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:28, skipping insertion in model container [2022-11-23 15:28:28,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:28" (3/3) ... [2022-11-23 15:28:28,468 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2022-11-23 15:28:28,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:28:28,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-23 15:28:28,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:28:28,567 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5283b8e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:28:28,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-23 15:28:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 15:28:28,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:28,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 15:28:28,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:28,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2732, now seen corresponding path program 1 times [2022-11-23 15:28:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:28,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221619475] [2022-11-23 15:28:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:28,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:29,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:28:29,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221619475] [2022-11-23 15:28:29,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221619475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:29,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:29,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:28:29,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877185748] [2022-11-23 15:28:29,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:29,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:28:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:28:29,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:28:29,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:29,074 INFO L87 Difference]: Start difference. First operand has 35 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:29,181 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-11-23 15:28:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:28:29,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 15:28:29,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:29,204 INFO L225 Difference]: With dead ends: 39 [2022-11-23 15:28:29,205 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:28:29,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:29,212 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:29,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 23 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:28:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:28:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-23 15:28:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2022-11-23 15:28:29,259 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 2 [2022-11-23 15:28:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:29,260 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2022-11-23 15:28:29,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2022-11-23 15:28:29,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 15:28:29,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:29,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 15:28:29,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:28:29,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2733, now seen corresponding path program 1 times [2022-11-23 15:28:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:29,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339940655] [2022-11-23 15:28:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:29,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:28:29,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339940655] [2022-11-23 15:28:29,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339940655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:29,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:29,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:28:29,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922128147] [2022-11-23 15:28:29,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:29,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:28:29,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:28:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:28:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:29,475 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:29,507 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-11-23 15:28:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:28:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 15:28:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:29,508 INFO L225 Difference]: With dead ends: 30 [2022-11-23 15:28:29,508 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 15:28:29,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:29,510 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:29,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:28:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 15:28:29,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-23 15:28:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 2.0) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-11-23 15:28:29,516 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 2 [2022-11-23 15:28:29,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:29,516 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-11-23 15:28:29,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-11-23 15:28:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:28:29,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:29,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:28:29,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:28:29,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:29,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2677112, now seen corresponding path program 1 times [2022-11-23 15:28:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:29,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481048316] [2022-11-23 15:28:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:29,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:28:29,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481048316] [2022-11-23 15:28:29,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481048316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:29,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:29,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:28:29,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329242292] [2022-11-23 15:28:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:29,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:28:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:28:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:28:29,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:28:29,667 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:29,769 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-11-23 15:28:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:28:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 15:28:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:29,772 INFO L225 Difference]: With dead ends: 29 [2022-11-23 15:28:29,772 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 15:28:29,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:28:29,774 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:29,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 19 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:28:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 15:28:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-23 15:28:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.8125) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-23 15:28:29,787 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 4 [2022-11-23 15:28:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:29,787 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-23 15:28:29,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-23 15:28:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:28:29,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:29,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:28:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:28:29,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:29,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2677113, now seen corresponding path program 1 times [2022-11-23 15:28:29,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:29,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877265484] [2022-11-23 15:28:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:29,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:29,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:28:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877265484] [2022-11-23 15:28:29,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877265484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:29,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:29,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:28:29,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927595601] [2022-11-23 15:28:29,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:29,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:28:29,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:28:29,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:28:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:28:29,955 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:29,998 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-23 15:28:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:28:29,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 15:28:29,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:29,999 INFO L225 Difference]: With dead ends: 24 [2022-11-23 15:28:30,000 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 15:28:30,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:28:30,001 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:30,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:28:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 15:28:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-23 15:28:30,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-23 15:28:30,006 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 4 [2022-11-23 15:28:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:30,007 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-23 15:28:30,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-23 15:28:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:28:30,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:30,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:30,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:28:30,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1849323435, now seen corresponding path program 1 times [2022-11-23 15:28:30,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:30,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472828816] [2022-11-23 15:28:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:30,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:30,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:28:30,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472828816] [2022-11-23 15:28:30,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472828816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:30,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:30,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:28:30,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283059502] [2022-11-23 15:28:30,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:28:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:28:30,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:28:30,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:28:30,304 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:30,399 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-11-23 15:28:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:28:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 15:28:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:30,404 INFO L225 Difference]: With dead ends: 23 [2022-11-23 15:28:30,405 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:28:30,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:28:30,407 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:30,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 23 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:28:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:28:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 15:28:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-23 15:28:30,411 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2022-11-23 15:28:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:30,411 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-23 15:28:30,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-23 15:28:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:28:30,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:30,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:30,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:28:30,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1494451580, now seen corresponding path program 1 times [2022-11-23 15:28:30,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:30,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916046239] [2022-11-23 15:28:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:30,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:28:30,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916046239] [2022-11-23 15:28:30,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916046239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:30,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:30,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:28:30,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351565567] [2022-11-23 15:28:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:30,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:28:30,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:28:30,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:28:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:28:30,741 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:30,847 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-23 15:28:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:28:30,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:28:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:30,849 INFO L225 Difference]: With dead ends: 22 [2022-11-23 15:28:30,849 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 15:28:30,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:28:30,851 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:30,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 14 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:28:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 15:28:30,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-23 15:28:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-23 15:28:30,855 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2022-11-23 15:28:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:30,856 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-23 15:28:30,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-23 15:28:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:28:30,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:30,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:30,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:28:30,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:30,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash 917072751, now seen corresponding path program 1 times [2022-11-23 15:28:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:30,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706534700] [2022-11-23 15:28:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:30,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:28:30,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:28:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:28:30,931 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:28:30,931 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:28:30,933 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (18 of 19 remaining) [2022-11-23 15:28:30,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2022-11-23 15:28:30,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2022-11-23 15:28:30,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2022-11-23 15:28:30,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2022-11-23 15:28:30,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 19 remaining) [2022-11-23 15:28:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2022-11-23 15:28:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2022-11-23 15:28:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2022-11-23 15:28:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (9 of 19 remaining) [2022-11-23 15:28:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (8 of 19 remaining) [2022-11-23 15:28:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (7 of 19 remaining) [2022-11-23 15:28:30,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (6 of 19 remaining) [2022-11-23 15:28:30,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (5 of 19 remaining) [2022-11-23 15:28:30,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (4 of 19 remaining) [2022-11-23 15:28:30,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2022-11-23 15:28:30,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2022-11-23 15:28:30,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2022-11-23 15:28:30,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 19 remaining) [2022-11-23 15:28:30,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:28:30,946 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:30,951 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:28:30,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:28:30 BoogieIcfgContainer [2022-11-23 15:28:30,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:28:30,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:28:30,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:28:30,988 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:28:30,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:28" (3/4) ... [2022-11-23 15:28:30,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:28:30,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:28:30,994 INFO L158 Benchmark]: Toolchain (without parser) took 3872.76ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 128.2MB in the beginning and 134.1MB in the end (delta: -6.0MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-11-23 15:28:30,994 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:28:30,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.05ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 111.6MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:28:30,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.55ms. Allocated memory is still 157.3MB. Free memory was 111.6MB in the beginning and 110.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:28:30,995 INFO L158 Benchmark]: Boogie Preprocessor took 30.79ms. Allocated memory is still 157.3MB. Free memory was 110.0MB in the beginning and 108.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:28:30,996 INFO L158 Benchmark]: RCFGBuilder took 647.74ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 92.7MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:28:30,996 INFO L158 Benchmark]: TraceAbstraction took 2536.07ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 91.8MB in the beginning and 135.2MB in the end (delta: -43.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:28:30,997 INFO L158 Benchmark]: Witness Printer took 5.20ms. Allocated memory is still 188.7MB. Free memory was 135.2MB in the beginning and 134.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:28:30,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.05ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 111.6MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.55ms. Allocated memory is still 157.3MB. Free memory was 111.6MB in the beginning and 110.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.79ms. Allocated memory is still 157.3MB. Free memory was 110.0MB in the beginning and 108.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 647.74ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 92.7MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2536.07ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 91.8MB in the beginning and 135.2MB in the end (delta: -43.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.20ms. Allocated memory is still 188.7MB. Free memory was 135.2MB in the beginning and 134.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; [L545] CALL alloc_data(&data) [L529] pdata->lo = malloc(16) [L530] pdata->hi = malloc(24) [L545] RET alloc_data(&data) [L546] CALL free_data(&data) [L534] EXPR data->lo [L534] void *lo = data->lo; [L535] EXPR data->hi [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [#in~data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L540] data->lo = (void *) 0 VAL [#in~data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L541] data->hi = (void *) 0 [L546] RET free_data(&data) [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 220 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 220 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 82 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 29, 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, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:28:31,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad --- 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-4e7fbc6 [2022-11-23 15:28:33,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:28:33,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:28:33,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:28:33,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:28:33,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:28:33,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:28:33,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:28:33,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:28:33,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:28:33,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:28:33,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:28:33,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:28:33,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:28:33,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:28:33,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:28:33,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:28:33,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:28:33,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:28:33,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:28:33,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:28:33,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:28:33,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:28:33,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:28:33,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:28:33,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:28:33,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:28:33,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:28:33,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:28:33,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:28:33,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:28:33,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:28:33,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:28:33,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:28:33,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:28:33,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:28:33,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:28:33,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:28:33,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:28:33,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:28:33,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:28:33,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 15:28:33,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:28:33,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:28:33,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:28:33,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:28:33,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:28:33,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:28:33,741 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:28:33,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:28:33,741 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:28:33,741 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:28:33,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:28:33,743 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:28:33,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:28:33,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:28:33,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:28:33,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:28:33,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:28:33,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:28:33,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:28:33,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:28:33,746 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:28:33,746 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:28:33,746 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 15:28:33,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:28:33,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:28:33,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:28:33,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:28:33,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:28:33,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:28:33,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:28:33,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:28:33,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:28:33,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:28:33,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:28:33,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:28:33,749 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:28:33,749 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:28:33,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:28:33,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:28:33,750 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2022-11-23 15:28:34,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:28:34,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:28:34,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:28:34,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:28:34,144 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:28:34,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/memsafety/test-0019-2.i [2022-11-23 15:28:37,521 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:28:37,890 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:28:37,890 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/sv-benchmarks/c/memsafety/test-0019-2.i [2022-11-23 15:28:37,916 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data/370b48e93/b76ffd24d0824ebf83271f7364d575a8/FLAG759170343 [2022-11-23 15:28:37,945 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/data/370b48e93/b76ffd24d0824ebf83271f7364d575a8 [2022-11-23 15:28:37,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:28:37,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:28:37,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:28:37,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:28:37,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:28:37,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:37" (1/1) ... [2022-11-23 15:28:37,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281d73f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:37, skipping insertion in model container [2022-11-23 15:28:37,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:37" (1/1) ... [2022-11-23 15:28:37,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:28:38,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:28:38,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:28:38,420 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:28:38,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:28:38,567 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:28:38,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38 WrapperNode [2022-11-23 15:28:38,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:28:38,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:28:38,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:28:38,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:28:38,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,645 INFO L138 Inliner]: procedures = 126, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2022-11-23 15:28:38,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:28:38,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:28:38,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:28:38,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:28:38,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:28:38,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:28:38,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:28:38,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:28:38,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (1/1) ... [2022-11-23 15:28:38,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:28:38,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:28:38,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:28:38,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:28:38,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:28:38,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:28:38,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:28:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:28:38,928 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:28:38,931 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:28:39,194 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:28:39,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:28:39,201 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:28:39,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:39 BoogieIcfgContainer [2022-11-23 15:28:39,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:28:39,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:28:39,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:28:39,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:28:39,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:28:37" (1/3) ... [2022-11-23 15:28:39,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34114143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:39, skipping insertion in model container [2022-11-23 15:28:39,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:38" (2/3) ... [2022-11-23 15:28:39,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34114143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:39, skipping insertion in model container [2022-11-23 15:28:39,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:39" (3/3) ... [2022-11-23 15:28:39,213 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2022-11-23 15:28:39,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:28:39,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-23 15:28:39,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:28:39,336 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@554b8339, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:28:39,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-23 15:28:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 42 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:28:39,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:39,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:28:39,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-23 15:28:39,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:39,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464858918] [2022-11-23 15:28:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:39,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:39,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:39,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:39,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:28:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:39,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:28:39,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:39,684 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 15:28:39,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-23 15:28:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:39,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:39,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:39,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464858918] [2022-11-23 15:28:39,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464858918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:39,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:39,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:28:39,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393232491] [2022-11-23 15:28:39,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:39,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:28:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:39,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:28:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:39,802 INFO L87 Difference]: Start difference. First operand has 43 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 42 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:39,936 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-11-23 15:28:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:28:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 15:28:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:39,948 INFO L225 Difference]: With dead ends: 48 [2022-11-23 15:28:39,948 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 15:28:39,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:39,953 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:39,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 32 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:28:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 15:28:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2022-11-23 15:28:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 38 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2022-11-23 15:28:40,014 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 3 [2022-11-23 15:28:40,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:40,015 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2022-11-23 15:28:40,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2022-11-23 15:28:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:28:40,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:40,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:28:40,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 15:28:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:40,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:40,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-23 15:28:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:40,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075893071] [2022-11-23 15:28:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:40,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:40,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:40,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:28:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:40,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:28:40,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:40,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 15:28:40,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-23 15:28:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:40,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:40,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:40,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075893071] [2022-11-23 15:28:40,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075893071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:40,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:40,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:28:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444966046] [2022-11-23 15:28:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:40,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:28:40,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:28:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:40,403 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:40,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:40,480 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-11-23 15:28:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:28:40,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 15:28:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:40,482 INFO L225 Difference]: With dead ends: 38 [2022-11-23 15:28:40,482 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:28:40,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:40,483 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:40,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:28:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:28:40,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-23 15:28:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 37 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-11-23 15:28:40,488 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 3 [2022-11-23 15:28:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:40,489 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-11-23 15:28:40,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-11-23 15:28:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:28:40,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:40,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:28:40,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:40,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:40,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:40,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:40,692 INFO L85 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2022-11-23 15:28:40,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:40,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40658676] [2022-11-23 15:28:40,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:40,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:40,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:40,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:40,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 15:28:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:40,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 15:28:40,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:40,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:40,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 15:28:40,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-23 15:28:40,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:40,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 15:28:41,021 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 15:28:41,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-23 15:28:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:41,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:41,028 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:41,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40658676] [2022-11-23 15:28:41,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40658676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:41,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:41,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:28:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811158608] [2022-11-23 15:28:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:28:41,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:28:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:28:41,031 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:41,194 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-11-23 15:28:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:28:41,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:28:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:41,197 INFO L225 Difference]: With dead ends: 44 [2022-11-23 15:28:41,197 INFO L226 Difference]: Without dead ends: 44 [2022-11-23 15:28:41,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:28:41,198 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 65 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:41,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 23 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:28:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-23 15:28:41,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-23 15:28:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-11-23 15:28:41,207 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 5 [2022-11-23 15:28:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:41,208 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-11-23 15:28:41,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-11-23 15:28:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:28:41,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:41,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:41,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:41,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:41,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:41,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 59200011, now seen corresponding path program 1 times [2022-11-23 15:28:41,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:41,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517027254] [2022-11-23 15:28:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:41,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:41,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:41,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:41,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 15:28:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:41,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:28:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:41,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:41,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:41,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517027254] [2022-11-23 15:28:41,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517027254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:41,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:41,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:28:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687739648] [2022-11-23 15:28:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:41,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:28:41,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:28:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:28:41,570 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:41,777 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-11-23 15:28:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:28:41,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:28:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:41,779 INFO L225 Difference]: With dead ends: 39 [2022-11-23 15:28:41,779 INFO L226 Difference]: Without dead ends: 39 [2022-11-23 15:28:41,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:28:41,780 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:41,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 31 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:28:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-23 15:28:41,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-11-23 15:28:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.565217391304348) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-11-23 15:28:41,785 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 8 [2022-11-23 15:28:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:41,785 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-11-23 15:28:41,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-11-23 15:28:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:28:41,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:41,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:41,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:41,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:41,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash 59200012, now seen corresponding path program 1 times [2022-11-23 15:28:41,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:41,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816378620] [2022-11-23 15:28:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:41,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:41,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:41,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:42,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 15:28:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:42,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:28:42,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:42,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:42,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:42,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816378620] [2022-11-23 15:28:42,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816378620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:42,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:42,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:28:42,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72209749] [2022-11-23 15:28:42,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:42,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:28:42,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:42,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:28:42,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:28:42,220 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:42,367 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-11-23 15:28:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:28:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:28:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:42,369 INFO L225 Difference]: With dead ends: 31 [2022-11-23 15:28:42,369 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 15:28:42,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:28:42,371 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:42,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 24 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:28:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 15:28:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-23 15:28:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-11-23 15:28:42,375 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 8 [2022-11-23 15:28:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:42,375 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-11-23 15:28:42,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-11-23 15:28:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:28:42,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:42,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:42,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:42,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:42,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash 406185098, now seen corresponding path program 1 times [2022-11-23 15:28:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:42,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038265196] [2022-11-23 15:28:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:42,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:42,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:42,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:42,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 15:28:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:42,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 15:28:42,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:42,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:28:42,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-23 15:28:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:42,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:42,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:42,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038265196] [2022-11-23 15:28:42,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038265196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:42,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:42,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:28:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224103602] [2022-11-23 15:28:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:42,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:28:42,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:28:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:28:42,854 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:43,415 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2022-11-23 15:28:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:28:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 15:28:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:43,416 INFO L225 Difference]: With dead ends: 33 [2022-11-23 15:28:43,416 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 15:28:43,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:28:43,418 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:43,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 63 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:28:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 15:28:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-11-23 15:28:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-11-23 15:28:43,421 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 13 [2022-11-23 15:28:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:43,421 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-11-23 15:28:43,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-11-23 15:28:43,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:28:43,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:43,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:43,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:43,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash -293163793, now seen corresponding path program 1 times [2022-11-23 15:28:43,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:43,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12408856] [2022-11-23 15:28:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:43,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:43,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:43,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 15:28:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:43,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 15:28:43,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:43,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:28:44,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-23 15:28:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:44,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:44,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:44,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12408856] [2022-11-23 15:28:44,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12408856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:44,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:44,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:28:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145915086] [2022-11-23 15:28:44,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:44,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:28:44,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:44,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:28:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:28:44,269 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:45,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:45,510 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2022-11-23 15:28:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 15:28:45,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 15:28:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:45,511 INFO L225 Difference]: With dead ends: 31 [2022-11-23 15:28:45,512 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 15:28:45,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:28:45,513 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 82 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:45,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 25 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:28:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 15:28:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-23 15:28:45,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-23 15:28:45,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-23 15:28:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:45,517 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-23 15:28:45,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-23 15:28:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:28:45,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:45,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:45,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:45,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:45,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash -498142932, now seen corresponding path program 1 times [2022-11-23 15:28:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:45,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807891969] [2022-11-23 15:28:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:45,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:45,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:45,731 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:45,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 15:28:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:45,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 15:28:45,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:45,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 15:28:45,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:28:45,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-23 15:28:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:46,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:28:46,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:46,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807891969] [2022-11-23 15:28:46,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807891969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:46,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:46,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:28:46,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973503794] [2022-11-23 15:28:46,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:46,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:28:46,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:28:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:28:46,022 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:46,591 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-23 15:28:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:28:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 15:28:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:46,593 INFO L225 Difference]: With dead ends: 28 [2022-11-23 15:28:46,593 INFO L226 Difference]: Without dead ends: 28 [2022-11-23 15:28:46,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:28:46,594 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:46,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 34 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:28:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-23 15:28:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-23 15:28:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-11-23 15:28:46,597 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 15 [2022-11-23 15:28:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:46,597 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-11-23 15:28:46,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:28:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-11-23 15:28:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:28:46,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:46,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:46,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:46,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:46,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-23 15:28:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1750799681, now seen corresponding path program 1 times [2022-11-23 15:28:46,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:28:46,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807362130] [2022-11-23 15:28:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:46,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:46,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:28:46,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:28:46,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 15:28:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:28:46,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:28:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:28:47,038 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:28:47,038 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:28:47,039 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (18 of 19 remaining) [2022-11-23 15:28:47,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2022-11-23 15:28:47,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2022-11-23 15:28:47,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2022-11-23 15:28:47,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2022-11-23 15:28:47,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 19 remaining) [2022-11-23 15:28:47,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2022-11-23 15:28:47,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2022-11-23 15:28:47,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2022-11-23 15:28:47,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (9 of 19 remaining) [2022-11-23 15:28:47,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (8 of 19 remaining) [2022-11-23 15:28:47,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (7 of 19 remaining) [2022-11-23 15:28:47,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (6 of 19 remaining) [2022-11-23 15:28:47,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (5 of 19 remaining) [2022-11-23 15:28:47,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (4 of 19 remaining) [2022-11-23 15:28:47,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2022-11-23 15:28:47,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2022-11-23 15:28:47,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2022-11-23 15:28:47,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 19 remaining) [2022-11-23 15:28:47,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:28:47,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:28:47,248 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:47,251 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:28:47,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:28:47 BoogieIcfgContainer [2022-11-23 15:28:47,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:28:47,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:28:47,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:28:47,275 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:28:47,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:39" (3/4) ... [2022-11-23 15:28:47,278 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:28:47,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:28:47,279 INFO L158 Benchmark]: Toolchain (without parser) took 9328.32ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 50.7MB in the beginning and 55.5MB in the end (delta: -4.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-23 15:28:47,279 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:28:47,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.91ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 50.1MB in the end (delta: 481.0kB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-11-23 15:28:47,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.45ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 48.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:28:47,280 INFO L158 Benchmark]: Boogie Preprocessor took 69.03ms. Allocated memory is still 73.4MB. Free memory was 48.0MB in the beginning and 46.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:28:47,281 INFO L158 Benchmark]: RCFGBuilder took 486.46ms. Allocated memory is still 73.4MB. Free memory was 46.6MB in the beginning and 31.6MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:28:47,281 INFO L158 Benchmark]: TraceAbstraction took 8068.79ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 31.0MB in the beginning and 56.2MB in the end (delta: -25.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:28:47,281 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 88.1MB. Free memory was 56.2MB in the beginning and 55.5MB in the end (delta: 722.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:28:47,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.91ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 50.1MB in the end (delta: 481.0kB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.45ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 48.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.03ms. Allocated memory is still 73.4MB. Free memory was 48.0MB in the beginning and 46.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 486.46ms. Allocated memory is still 73.4MB. Free memory was 46.6MB in the beginning and 31.6MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8068.79ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 31.0MB in the beginning and 56.2MB in the end (delta: -25.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 88.1MB. Free memory was 56.2MB in the beginning and 55.5MB in the end (delta: 722.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; [L545] CALL alloc_data(&data) [L529] pdata->lo = malloc(16) VAL [#in~pdata={11:0}, malloc(16)={3:0}, pdata={11:0}] [L530] pdata->hi = malloc(24) VAL [#in~pdata={11:0}, malloc(24)={4:0}, pdata={11:0}] [L545] RET alloc_data(&data) [L546] CALL free_data(&data) [L534] EXPR data->lo VAL [#in~data={11:0}, data={11:0}, data->lo={3:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [#in~data={11:0}, data={11:0}, data->hi={4:0}, lo={3:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [#in~data={11:0}, data={11:0}, hi={4:0}, lo={3:0}] [L540] data->lo = (void *) 0 VAL [#in~data={11:0}, data={11:0}, hi={4:0}, lo={3:0}] [L541] data->hi = (void *) 0 VAL [#in~data={11:0}, data={11:0}, hi={4:0}, lo={3:0}] [L546] RET free_data(&data) [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 292 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 139 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 153 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 58, 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, 8 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 61 ConstructedInterpolants, 12 QuantifiedInterpolants, 555 SizeOfPredicates, 66 NumberOfNonLiveVariables, 546 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:28:47,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a69dcc0d-6cf4-4b8e-b761-0a15e385a0e7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample