./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:06,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:06,942 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:37:06,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:06,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:06,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:06,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:06,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:06,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:06,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:06,994 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:06,995 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:06,995 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:06,995 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:06,996 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:06,996 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:06,996 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:06,997 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:06,997 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:07,000 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:07,001 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:07,004 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:07,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:37:07,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:37:07,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:07,006 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:07,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:07,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:07,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:07,007 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:37:07,007 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:37:07,008 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:37:07,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:07,008 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:37:07,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:07,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:37:07,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:07,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:07,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:07,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:07,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:07,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:07,012 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:07,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:07,013 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:07,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:07,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:07,014 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:07,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:07,014 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2024-11-02 12:37:07,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:07,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:07,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:07,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:07,428 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:07,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i Unable to find full path for "g++" [2024-11-02 12:37:09,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:10,361 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:10,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-02 12:37:10,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data/94b77ea68/5eeac21a27a449be960db019859e25a7/FLAG7d979e031 [2024-11-02 12:37:10,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data/94b77ea68/5eeac21a27a449be960db019859e25a7 [2024-11-02 12:37:10,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:10,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:10,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:10,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:10,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:10,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:10" (1/1) ... [2024-11-02 12:37:10,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4180345a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:10, skipping insertion in model container [2024-11-02 12:37:10,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:10" (1/1) ... [2024-11-02 12:37:10,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:11,238 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:11,238 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:11,239 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:11,239 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:11,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:11,330 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-02 12:37:11,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33840972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:11, skipping insertion in model container [2024-11-02 12:37:11,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:11,336 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-02 12:37:11,337 INFO L158 Benchmark]: Toolchain (without parser) took 920.39ms. Allocated memory is still 148.9MB. Free memory was 115.5MB in the beginning and 105.0MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-02 12:37:11,338 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 148.9MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:37:11,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 916.06ms. Allocated memory is still 148.9MB. Free memory was 114.9MB in the beginning and 105.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-02 12:37:11,344 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 148.9MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 916.06ms. Allocated memory is still 148.9MB. Free memory was 114.9MB in the beginning and 105.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1058]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:13,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:13,788 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-02 12:37:13,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:13,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:13,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:13,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:13,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:13,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:13,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:13,846 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:13,847 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:13,847 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:13,848 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:13,850 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:13,851 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:13,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:37:13,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:37:13,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:13,856 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:13,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:13,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:13,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:13,858 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:37:13,858 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:37:13,859 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:37:13,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:13,860 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:37:13,861 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:37:13,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:13,861 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:37:13,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:37:13,863 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:13,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:13,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:13,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:37:13,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:13,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:13,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:13,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:13,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:13,868 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:37:13,868 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:37:13,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:13,869 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:13,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:13,870 INFO L153 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_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2024-11-02 12:37:14,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:14,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:14,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:14,308 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:14,309 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:14,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i Unable to find full path for "g++" [2024-11-02 12:37:16,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:16,809 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:16,809 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-02 12:37:16,830 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data/5648dfbef/20774f87f17d44169613f2cb7021d9ac/FLAGebbcac864 [2024-11-02 12:37:16,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/data/5648dfbef/20774f87f17d44169613f2cb7021d9ac [2024-11-02 12:37:16,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:16,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:16,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:16,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:16,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:16,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:16" (1/1) ... [2024-11-02 12:37:16,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236e9b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:16, skipping insertion in model container [2024-11-02 12:37:16,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:16" (1/1) ... [2024-11-02 12:37:16,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:17,584 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,584 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,585 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,585 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:17,659 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-02 12:37:17,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:17,720 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,721 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,721 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,722 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:17,766 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:17,809 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,811 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,812 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,812 WARN L1657 CHandler]: Possible shadowing of function new [2024-11-02 12:37:17,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:17,933 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:17,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17 WrapperNode [2024-11-02 12:37:17,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:17,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:17,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:17,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:17,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:17,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,023 INFO L138 Inliner]: procedures = 285, calls = 126, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 303 [2024-11-02 12:37:18,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:18,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:18,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:18,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:18,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:18,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:18,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:18,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:18,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (1/1) ... [2024-11-02 12:37:18,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:18,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:18,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:18,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-02 12:37:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:37:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:37:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:37:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-02 12:37:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:37:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 12:37:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-02 12:37:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-02 12:37:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-02 12:37:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:37:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:37:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-02 12:37:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-02 12:37:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:18,201 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:37:18,415 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:18,418 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:19,941 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:37:19,941 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:22,301 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:22,302 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-02 12:37:22,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:22 BoogieIcfgContainer [2024-11-02 12:37:22,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:22,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:22,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:22,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:22,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:16" (1/3) ... [2024-11-02 12:37:22,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ab2a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:22, skipping insertion in model container [2024-11-02 12:37:22,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:17" (2/3) ... [2024-11-02 12:37:22,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ab2a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:22, skipping insertion in model container [2024-11-02 12:37:22,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:22" (3/3) ... [2024-11-02 12:37:22,315 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-11-02 12:37:22,340 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:22,340 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-02 12:37:22,340 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:37:22,493 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-02 12:37:22,543 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 130 transitions, 267 flow [2024-11-02 12:37:22,645 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 879 states, 722 states have (on average 2.580332409972299) internal successors, (1863), 878 states have internal predecessors, (1863), 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) [2024-11-02 12:37:22,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:22,685 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@7077be09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:22,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-02 12:37:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 879 states, 722 states have (on average 2.580332409972299) internal successors, (1863), 878 states have internal predecessors, (1863), 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) [2024-11-02 12:37:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:37:22,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:22,704 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:37:22,705 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:22,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash 824147, now seen corresponding path program 1 times [2024-11-02 12:37:22,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:22,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202575107] [2024-11-02 12:37:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:22,735 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 [2024-11-02 12:37:22,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:22,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:22,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:22,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:37:23,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:23,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:23,102 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:23,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202575107] [2024-11-02 12:37:23,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202575107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:23,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:23,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:37:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819611087] [2024-11-02 12:37:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:23,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:23,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:23,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:23,152 INFO L87 Difference]: Start difference. First operand has 879 states, 722 states have (on average 2.580332409972299) internal successors, (1863), 878 states have internal predecessors, (1863), 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 4 states, 3 states have (on average 1.0) 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) [2024-11-02 12:37:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:23,947 INFO L93 Difference]: Finished difference Result 1670 states and 3606 transitions. [2024-11-02 12:37:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:23,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2024-11-02 12:37:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:23,971 INFO L225 Difference]: With dead ends: 1670 [2024-11-02 12:37:23,971 INFO L226 Difference]: Without dead ends: 846 [2024-11-02 12:37:23,978 INFO L431 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 [2024-11-02 12:37:23,981 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 109 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:23,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 96 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:37:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-02 12:37:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 846. [2024-11-02 12:37:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 701 states have (on average 2.3152639087018545) internal successors, (1623), 845 states have internal predecessors, (1623), 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) [2024-11-02 12:37:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1623 transitions. [2024-11-02 12:37:24,119 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1623 transitions. Word has length 3 [2024-11-02 12:37:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:24,119 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1623 transitions. [2024-11-02 12:37:24,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2024-11-02 12:37:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1623 transitions. [2024-11-02 12:37:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:37:24,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:24,121 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:37:24,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:24,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:24,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:24,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash 824148, now seen corresponding path program 1 times [2024-11-02 12:37:24,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:24,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899417101] [2024-11-02 12:37:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:24,324 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 [2024-11-02 12:37:24,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:24,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:24,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:24,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:37:24,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:24,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:24,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899417101] [2024-11-02 12:37:24,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899417101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:24,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:24,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:37:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284061478] [2024-11-02 12:37:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:24,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:24,623 INFO L87 Difference]: Start difference. First operand 846 states and 1623 transitions. Second operand has 4 states, 3 states have (on average 1.0) 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) [2024-11-02 12:37:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:25,377 INFO L93 Difference]: Finished difference Result 1667 states and 3221 transitions. [2024-11-02 12:37:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:25,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2024-11-02 12:37:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:25,385 INFO L225 Difference]: With dead ends: 1667 [2024-11-02 12:37:25,385 INFO L226 Difference]: Without dead ends: 850 [2024-11-02 12:37:25,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:25,388 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:25,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:37:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-02 12:37:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 849. [2024-11-02 12:37:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 704 states have (on average 2.309659090909091) internal successors, (1626), 848 states have internal predecessors, (1626), 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) [2024-11-02 12:37:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1626 transitions. [2024-11-02 12:37:25,418 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1626 transitions. Word has length 3 [2024-11-02 12:37:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:25,419 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1626 transitions. [2024-11-02 12:37:25,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2024-11-02 12:37:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1626 transitions. [2024-11-02 12:37:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:37:25,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:25,420 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:37:25,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:37:25,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:25,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:25,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1216856412, now seen corresponding path program 1 times [2024-11-02 12:37:25,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:25,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969949596] [2024-11-02 12:37:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:25,623 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 [2024-11-02 12:37:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:25,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:25,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:25,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:37:25,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:25,857 INFO L378 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 [2024-11-02 12:37:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:25,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:25,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969949596] [2024-11-02 12:37:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969949596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:25,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:37:25,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42634817] [2024-11-02 12:37:25,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:25,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:37:25,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:25,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:37:25,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:25,876 INFO L87 Difference]: Start difference. First operand 849 states and 1626 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-02 12:37:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:26,254 INFO L93 Difference]: Finished difference Result 849 states and 1626 transitions. [2024-11-02 12:37:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:37:26,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-02 12:37:26,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:26,270 INFO L225 Difference]: With dead ends: 849 [2024-11-02 12:37:26,270 INFO L226 Difference]: Without dead ends: 848 [2024-11-02 12:37:26,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:26,272 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:26,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 101 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:37:26,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-02 12:37:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2024-11-02 12:37:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 704 states have (on average 2.3082386363636362) internal successors, (1625), 847 states have internal predecessors, (1625), 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) [2024-11-02 12:37:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1625 transitions. [2024-11-02 12:37:26,310 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1625 transitions. Word has length 6 [2024-11-02 12:37:26,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:26,311 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 1625 transitions. [2024-11-02 12:37:26,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-02 12:37:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1625 transitions. [2024-11-02 12:37:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:37:26,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:26,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:37:26,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:26,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:26,517 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:26,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1216856411, now seen corresponding path program 1 times [2024-11-02 12:37:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:26,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391955729] [2024-11-02 12:37:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:26,526 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 [2024-11-02 12:37:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:26,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:26,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:26,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:37:26,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:26,811 INFO L378 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 5 [2024-11-02 12:37:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:26,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:26,828 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391955729] [2024-11-02 12:37:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391955729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:26,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:26,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:37:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781844698] [2024-11-02 12:37:26,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:26,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:37:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:37:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:26,831 INFO L87 Difference]: Start difference. First operand 848 states and 1625 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-02 12:37:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:27,296 INFO L93 Difference]: Finished difference Result 848 states and 1625 transitions. [2024-11-02 12:37:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:37:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-02 12:37:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:27,305 INFO L225 Difference]: With dead ends: 848 [2024-11-02 12:37:27,305 INFO L226 Difference]: Without dead ends: 847 [2024-11-02 12:37:27,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:27,308 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:27,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 98 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:37:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-02 12:37:27,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2024-11-02 12:37:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 704 states have (on average 2.3068181818181817) internal successors, (1624), 846 states have internal predecessors, (1624), 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) [2024-11-02 12:37:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1624 transitions. [2024-11-02 12:37:27,339 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1624 transitions. Word has length 6 [2024-11-02 12:37:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:27,339 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1624 transitions. [2024-11-02 12:37:27,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-02 12:37:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1624 transitions. [2024-11-02 12:37:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:37:27,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:27,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:27,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:37:27,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:27,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:27,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash 932157748, now seen corresponding path program 1 times [2024-11-02 12:37:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:27,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701961199] [2024-11-02 12:37:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:27,546 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 [2024-11-02 12:37:27,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:27,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:27,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:27,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:37:27,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:27,858 INFO L378 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 [2024-11-02 12:37:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:27,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:27,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701961199] [2024-11-02 12:37:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701961199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:27,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:27,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:37:27,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700366109] [2024-11-02 12:37:27,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:27,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:27,891 INFO L87 Difference]: Start difference. First operand 847 states and 1624 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-02 12:37:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:28,545 INFO L93 Difference]: Finished difference Result 847 states and 1624 transitions. [2024-11-02 12:37:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:37:28,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2024-11-02 12:37:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:28,565 INFO L225 Difference]: With dead ends: 847 [2024-11-02 12:37:28,566 INFO L226 Difference]: Without dead ends: 845 [2024-11-02 12:37:28,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:28,571 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 8 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:28,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 134 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:37:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-02 12:37:28,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2024-11-02 12:37:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 704 states have (on average 2.303977272727273) internal successors, (1622), 844 states have internal predecessors, (1622), 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) [2024-11-02 12:37:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1622 transitions. [2024-11-02 12:37:28,604 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1622 transitions. Word has length 7 [2024-11-02 12:37:28,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:28,604 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1622 transitions. [2024-11-02 12:37:28,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-02 12:37:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1622 transitions. [2024-11-02 12:37:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:37:28,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:28,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:28,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:28,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:28,806 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:28,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash 932157749, now seen corresponding path program 1 times [2024-11-02 12:37:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:28,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823660726] [2024-11-02 12:37:28,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:28,808 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 [2024-11-02 12:37:28,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:28,812 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:28,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:29,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:37:29,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:29,051 INFO L378 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 5 [2024-11-02 12:37:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:29,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:29,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:29,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823660726] [2024-11-02 12:37:29,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823660726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:29,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:29,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:37:29,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906803048] [2024-11-02 12:37:29,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:29,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:29,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:29,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:29,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:29,101 INFO L87 Difference]: Start difference. First operand 845 states and 1622 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-02 12:37:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:29,734 INFO L93 Difference]: Finished difference Result 845 states and 1622 transitions. [2024-11-02 12:37:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2024-11-02 12:37:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:29,741 INFO L225 Difference]: With dead ends: 845 [2024-11-02 12:37:29,741 INFO L226 Difference]: Without dead ends: 843 [2024-11-02 12:37:29,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:29,745 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:29,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:37:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-11-02 12:37:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2024-11-02 12:37:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 704 states have (on average 2.3011363636363638) internal successors, (1620), 842 states have internal predecessors, (1620), 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) [2024-11-02 12:37:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1620 transitions. [2024-11-02 12:37:29,786 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1620 transitions. Word has length 7 [2024-11-02 12:37:29,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:29,786 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1620 transitions. [2024-11-02 12:37:29,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-11-02 12:37:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1620 transitions. [2024-11-02 12:37:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:37:29,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:29,789 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-02 12:37:29,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:37:29,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:29,990 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:29,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash 932159261, now seen corresponding path program 1 times [2024-11-02 12:37:29,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:29,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330774706] [2024-11-02 12:37:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:29,992 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 [2024-11-02 12:37:29,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:29,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:29,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:30,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:37:30,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:30,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:30,249 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:30,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330774706] [2024-11-02 12:37:30,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330774706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:30,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:30,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:37:30,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089993964] [2024-11-02 12:37:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:30,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:37:30,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:30,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:37:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:30,257 INFO L87 Difference]: Start difference. First operand 843 states and 1620 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-02 12:37:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:30,662 INFO L93 Difference]: Finished difference Result 1701 states and 3256 transitions. [2024-11-02 12:37:30,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:37:30,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2024-11-02 12:37:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:30,674 INFO L225 Difference]: With dead ends: 1701 [2024-11-02 12:37:30,674 INFO L226 Difference]: Without dead ends: 862 [2024-11-02 12:37:30,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:37:30,677 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 18 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:30,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 122 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:37:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2024-11-02 12:37:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 844. [2024-11-02 12:37:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 705 states have (on average 2.299290780141844) internal successors, (1621), 843 states have internal predecessors, (1621), 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) [2024-11-02 12:37:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1621 transitions. [2024-11-02 12:37:30,732 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1621 transitions. Word has length 7 [2024-11-02 12:37:30,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:30,732 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 1621 transitions. [2024-11-02 12:37:30,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-02 12:37:30,732 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1621 transitions. [2024-11-02 12:37:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:37:30,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:30,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:30,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:37:30,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:30,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:30,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1844541978, now seen corresponding path program 1 times [2024-11-02 12:37:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:30,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922741937] [2024-11-02 12:37:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:30,935 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 [2024-11-02 12:37:30,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:30,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:30,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:31,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:37:31,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:31,727 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-02 12:37:31,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-02 12:37:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:31,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:31,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:31,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922741937] [2024-11-02 12:37:31,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922741937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:31,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:31,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:37:31,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191565076] [2024-11-02 12:37:31,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:31,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:31,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:31,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:31,795 INFO L87 Difference]: Start difference. First operand 844 states and 1621 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-02 12:37:32,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:32,342 INFO L93 Difference]: Finished difference Result 844 states and 1621 transitions. [2024-11-02 12:37:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:32,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-02 12:37:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:32,348 INFO L225 Difference]: With dead ends: 844 [2024-11-02 12:37:32,349 INFO L226 Difference]: Without dead ends: 842 [2024-11-02 12:37:32,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:32,350 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 105 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:32,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 89 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:37:32,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-02 12:37:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2024-11-02 12:37:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 705 states have (on average 2.2964539007092197) internal successors, (1619), 841 states have internal predecessors, (1619), 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) [2024-11-02 12:37:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1619 transitions. [2024-11-02 12:37:32,376 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1619 transitions. Word has length 9 [2024-11-02 12:37:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:32,376 INFO L471 AbstractCegarLoop]: Abstraction has 842 states and 1619 transitions. [2024-11-02 12:37:32,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-02 12:37:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1619 transitions. [2024-11-02 12:37:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:37:32,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:32,377 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:32,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:37:32,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:32,578 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:32,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1844541977, now seen corresponding path program 1 times [2024-11-02 12:37:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:32,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732242968] [2024-11-02 12:37:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:32,579 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 [2024-11-02 12:37:32,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:32,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:32,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:33,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-02 12:37:33,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:33,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:37:33,475 INFO L378 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 14 treesize of output 9 [2024-11-02 12:37:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:33,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:33,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:33,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732242968] [2024-11-02 12:37:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732242968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:33,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:33,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:37:33,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697380419] [2024-11-02 12:37:33,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:33,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:37:33,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:37:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:33,586 INFO L87 Difference]: Start difference. First operand 842 states and 1619 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-02 12:37:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:34,308 INFO L93 Difference]: Finished difference Result 860 states and 1638 transitions. [2024-11-02 12:37:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:34,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2024-11-02 12:37:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:34,315 INFO L225 Difference]: With dead ends: 860 [2024-11-02 12:37:34,315 INFO L226 Difference]: Without dead ends: 858 [2024-11-02 12:37:34,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:37:34,316 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 36 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:34,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 114 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:37:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-11-02 12:37:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 852. [2024-11-02 12:37:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 715 states have (on average 2.2881118881118883) internal successors, (1636), 851 states have internal predecessors, (1636), 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) [2024-11-02 12:37:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1636 transitions. [2024-11-02 12:37:34,341 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1636 transitions. Word has length 9 [2024-11-02 12:37:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:34,341 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1636 transitions. [2024-11-02 12:37:34,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-02 12:37:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1636 transitions. [2024-11-02 12:37:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:37:34,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:34,342 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:34,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:37:34,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:34,543 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:34,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:34,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1346225553, now seen corresponding path program 1 times [2024-11-02 12:37:34,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:34,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051408527] [2024-11-02 12:37:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:34,544 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 [2024-11-02 12:37:34,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:34,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:34,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 (11)] Waiting until timeout for monitored process [2024-11-02 12:37:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:35,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-02 12:37:35,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:35,564 INFO L378 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 11 treesize of output 7 [2024-11-02 12:37:35,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 27 [2024-11-02 12:37:35,776 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-02 12:37:35,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2024-11-02 12:37:35,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 25 [2024-11-02 12:37:35,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 25 [2024-11-02 12:37:36,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-02 12:37:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:36,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:36,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051408527] [2024-11-02 12:37:36,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051408527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:36,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:36,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:37:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800366289] [2024-11-02 12:37:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:36,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:37:36,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:37:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:37:36,105 INFO L87 Difference]: Start difference. First operand 852 states and 1636 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2024-11-02 12:37:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:37,845 INFO L93 Difference]: Finished difference Result 876 states and 1666 transitions. [2024-11-02 12:37:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:37:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 10 [2024-11-02 12:37:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:37,853 INFO L225 Difference]: With dead ends: 876 [2024-11-02 12:37:37,853 INFO L226 Difference]: Without dead ends: 875 [2024-11-02 12:37:37,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:37:37,855 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 128 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:37,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 249 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-02 12:37:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-11-02 12:37:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 862. [2024-11-02 12:37:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 725 states have (on average 2.2744827586206897) internal successors, (1649), 861 states have internal predecessors, (1649), 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) [2024-11-02 12:37:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1649 transitions. [2024-11-02 12:37:37,890 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1649 transitions. Word has length 10 [2024-11-02 12:37:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:37,890 INFO L471 AbstractCegarLoop]: Abstraction has 862 states and 1649 transitions. [2024-11-02 12:37:37,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2024-11-02 12:37:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1649 transitions. [2024-11-02 12:37:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:37:37,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:37,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:37,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 (11)] Forceful destruction successful, exit code 0 [2024-11-02 12:37:38,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:38,092 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-02 12:37:38,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1346225552, now seen corresponding path program 1 times [2024-11-02 12:37:38,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:38,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410147486] [2024-11-02 12:37:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:38,094 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 [2024-11-02 12:37:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:38,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:38,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b322b5f-a8c0-444c-8f59-a7bdfaff5967/bin/utaipan-verify-DbMuA5NWw2/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 (12)] Waiting until timeout for monitored process [2024-11-02 12:37:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:39,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 36 conjuncts are in the unsatisfiable core