./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh --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 a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:49:59,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:49:59,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 17:49:59,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:49:59,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:49:59,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:49:59,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:49:59,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:49:59,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:49:59,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:49:59,611 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:49:59,611 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:49:59,612 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:49:59,612 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:49:59,613 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:49:59,613 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:49:59,614 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:49:59,614 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:49:59,615 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:49:59,615 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:49:59,616 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:49:59,619 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:49:59,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:49:59,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:49:59,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:49:59,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:49:59,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:49:59,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:49:59,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:49:59,623 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:49:59,623 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:49:59,623 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 17:49:59,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:49:59,624 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:49:59,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:49:59,624 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:49:59,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:49:59,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:49:59,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:49:59,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:49:59,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:49:59,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:49:59,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:49:59,626 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:49:59,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:49:59,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:49:59,627 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:49:59,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:49:59,627 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_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2023-12-02 17:49:59,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:49:59,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:49:59,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:49:59,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:49:59,881 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:49:59,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-12-02 17:50:02,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:50:02,855 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:50:02,856 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-12-02 17:50:02,883 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data/36a6c538b/dea6ee41c97d441d96e2143079bcaa9f/FLAGd3b61c23a [2023-12-02 17:50:02,896 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data/36a6c538b/dea6ee41c97d441d96e2143079bcaa9f [2023-12-02 17:50:02,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:50:02,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:50:02,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:50:02,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:50:02,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:50:02,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:02" (1/1) ... [2023-12-02 17:50:02,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce527e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:02, skipping insertion in model container [2023-12-02 17:50:02,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:02" (1/1) ... [2023-12-02 17:50:02,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:50:03,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:50:03,314 ERROR L324 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) [2023-12-02 17:50:03,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f73a048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03, skipping insertion in model container [2023-12-02 17:50:03,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:50:03,315 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 17:50:03,317 INFO L158 Benchmark]: Toolchain (without parser) took 415.57ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 131.9MB in the end (delta: -2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:50:03,317 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:50:03,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.60ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 131.9MB in the end (delta: -2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:50:03,319 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.60ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 131.9MB in the end (delta: -2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2999]: 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_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh --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 a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:50:05,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:50:05,212 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 17:50:05,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:50:05,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:50:05,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:50:05,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:50:05,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:50:05,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:50:05,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:50:05,249 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:50:05,250 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:50:05,250 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:50:05,251 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:50:05,251 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:50:05,252 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:50:05,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:50:05,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:50:05,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:50:05,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:50:05,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:50:05,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:50:05,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:50:05,256 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:50:05,256 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:50:05,257 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 17:50:05,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:50:05,258 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:50:05,258 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:50:05,259 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:50:05,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:50:05,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:50:05,260 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:50:05,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:50:05,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:50:05,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:50:05,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:50:05,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:50:05,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:50:05,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:50:05,262 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:50:05,262 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:50:05,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:50:05,263 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:50:05,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:50:05,263 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_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2023-12-02 17:50:05,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:50:05,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:50:05,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:50:05,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:50:05,587 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:50:05,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-12-02 17:50:08,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:50:08,741 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:50:08,742 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-12-02 17:50:08,769 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data/5fb40d8fe/2b5c358cc7e9444da4bb2801d07fe7b1/FLAG23a74921c [2023-12-02 17:50:08,785 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/data/5fb40d8fe/2b5c358cc7e9444da4bb2801d07fe7b1 [2023-12-02 17:50:08,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:50:08,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:50:08,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:50:08,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:50:08,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:50:08,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:08" (1/1) ... [2023-12-02 17:50:08,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8e7e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:08, skipping insertion in model container [2023-12-02 17:50:08,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:08" (1/1) ... [2023-12-02 17:50:08,908 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:50:09,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:50:09,277 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 17:50:09,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:50:09,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:50:09,330 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:50:09,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:50:09,415 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:50:09,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09 WrapperNode [2023-12-02 17:50:09,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:50:09,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:50:09,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:50:09,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:50:09,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,467 INFO L138 Inliner]: procedures = 188, calls = 16, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-12-02 17:50:09,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:50:09,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:50:09,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:50:09,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:50:09,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:50:09,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:50:09,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:50:09,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:50:09,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (1/1) ... [2023-12-02 17:50:09,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:50:09,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:09,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:50:09,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:50:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:50:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 17:50:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:50:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:50:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-02 17:50:09,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-02 17:50:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:50:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:50:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 17:50:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:50:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:50:09,568 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 17:50:09,700 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:50:09,702 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:50:09,981 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:50:10,097 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:50:10,097 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:50:10,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:50:10 BoogieIcfgContainer [2023-12-02 17:50:10,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:50:10,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:50:10,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:50:10,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:50:10,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:50:08" (1/3) ... [2023-12-02 17:50:10,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1272f5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:50:10, skipping insertion in model container [2023-12-02 17:50:10,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:09" (2/3) ... [2023-12-02 17:50:10,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1272f5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:50:10, skipping insertion in model container [2023-12-02 17:50:10,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:50:10" (3/3) ... [2023-12-02 17:50:10,106 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2023-12-02 17:50:10,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:50:10,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-12-02 17:50:10,126 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 17:50:10,173 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 17:50:10,203 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 70 flow [2023-12-02 17:50:10,229 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 173 states, 140 states have (on average 2.2285714285714286) internal successors, (312), 172 states have internal predecessors, (312), 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) [2023-12-02 17:50:10,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:50:10,256 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d4c7be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:50:10,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-12-02 17:50:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 140 states have (on average 2.2285714285714286) internal successors, (312), 172 states have internal predecessors, (312), 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) [2023-12-02 17:50:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 17:50:10,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:10,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 17:50:10,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:10,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash 6598, now seen corresponding path program 1 times [2023-12-02 17:50:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607931374] [2023-12-02 17:50:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:10,285 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 [2023-12-02 17:50:10,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:10,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:10,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:10,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:50:10,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:10,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 17:50:10,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:50:10,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:50:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:10,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:10,527 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:10,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607931374] [2023-12-02 17:50:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607931374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:50:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390333092] [2023-12-02 17:50:10,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:10,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:10,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:10,566 INFO L87 Difference]: Start difference. First operand has 173 states, 140 states have (on average 2.2285714285714286) internal successors, (312), 172 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:10,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:10,687 INFO L93 Difference]: Finished difference Result 172 states and 311 transitions. [2023-12-02 17:50:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:10,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 17:50:10,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:10,701 INFO L225 Difference]: With dead ends: 172 [2023-12-02 17:50:10,701 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 17:50:10,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:10,706 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:10,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 17:50:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-12-02 17:50:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 140 states have (on average 2.2214285714285715) internal successors, (311), 171 states have internal predecessors, (311), 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) [2023-12-02 17:50:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 311 transitions. [2023-12-02 17:50:10,758 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 311 transitions. Word has length 2 [2023-12-02 17:50:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:10,759 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 311 transitions. [2023-12-02 17:50:10,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 311 transitions. [2023-12-02 17:50:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 17:50:10,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:10,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 17:50:10,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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)] Forceful destruction successful, exit code 0 [2023-12-02 17:50:10,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:10,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:10,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash 6599, now seen corresponding path program 1 times [2023-12-02 17:50:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:10,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409193384] [2023-12-02 17:50:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:10,963 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 [2023-12-02 17:50:10,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:10,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:10,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:11,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:50:11,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:11,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 17:50:11,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:50:11,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:50:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:11,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:11,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:11,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409193384] [2023-12-02 17:50:11,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409193384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:11,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:11,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:50:11,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780093889] [2023-12-02 17:50:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:11,066 INFO L87 Difference]: Start difference. First operand 172 states and 311 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:11,176 INFO L93 Difference]: Finished difference Result 171 states and 310 transitions. [2023-12-02 17:50:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:11,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 17:50:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:11,180 INFO L225 Difference]: With dead ends: 171 [2023-12-02 17:50:11,180 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 17:50:11,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:11,182 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:11,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 17:50:11,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-12-02 17:50:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 140 states have (on average 2.2142857142857144) internal successors, (310), 170 states have internal predecessors, (310), 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) [2023-12-02 17:50:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 310 transitions. [2023-12-02 17:50:11,199 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 310 transitions. Word has length 2 [2023-12-02 17:50:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:11,200 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 310 transitions. [2023-12-02 17:50:11,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 310 transitions. [2023-12-02 17:50:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:50:11,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:11,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:50:11,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:11,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:11,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:11,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash 204765, now seen corresponding path program 1 times [2023-12-02 17:50:11,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:11,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259351247] [2023-12-02 17:50:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:11,406 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 [2023-12-02 17:50:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:11,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:11,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:11,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:50:11,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:11,530 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 17:50:11,530 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-12-02 17:50:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:11,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:11,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259351247] [2023-12-02 17:50:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259351247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:11,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:11,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:50:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961908782] [2023-12-02 17:50:11,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:11,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:11,568 INFO L87 Difference]: Start difference. First operand 171 states and 310 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-12-02 17:50:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:11,694 INFO L93 Difference]: Finished difference Result 170 states and 309 transitions. [2023-12-02 17:50:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-12-02 17:50:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:11,697 INFO L225 Difference]: With dead ends: 170 [2023-12-02 17:50:11,697 INFO L226 Difference]: Without dead ends: 170 [2023-12-02 17:50:11,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:11,699 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:11,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-02 17:50:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-02 17:50:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 140 states have (on average 2.2071428571428573) internal successors, (309), 169 states have internal predecessors, (309), 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) [2023-12-02 17:50:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 309 transitions. [2023-12-02 17:50:11,713 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 309 transitions. Word has length 3 [2023-12-02 17:50:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:11,714 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 309 transitions. [2023-12-02 17:50:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-12-02 17:50:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 309 transitions. [2023-12-02 17:50:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:50:11,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:11,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:50:11,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 17:50:11,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:11,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:11,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash 204766, now seen corresponding path program 1 times [2023-12-02 17:50:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:11,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437025595] [2023-12-02 17:50:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:11,919 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 [2023-12-02 17:50:11,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:11,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:11,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:11,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:50:11,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:11,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:50:12,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 17:50:12,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 17:50:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:12,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:12,028 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:12,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437025595] [2023-12-02 17:50:12,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437025595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:12,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:12,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:50:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156767913] [2023-12-02 17:50:12,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:12,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:12,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:12,031 INFO L87 Difference]: Start difference. First operand 170 states and 309 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-12-02 17:50:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:12,147 INFO L93 Difference]: Finished difference Result 169 states and 308 transitions. [2023-12-02 17:50:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-12-02 17:50:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:12,150 INFO L225 Difference]: With dead ends: 169 [2023-12-02 17:50:12,150 INFO L226 Difference]: Without dead ends: 169 [2023-12-02 17:50:12,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:12,151 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:12,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 11 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-02 17:50:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-12-02 17:50:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 140 states have (on average 2.2) internal successors, (308), 168 states have internal predecessors, (308), 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) [2023-12-02 17:50:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 308 transitions. [2023-12-02 17:50:12,163 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 308 transitions. Word has length 3 [2023-12-02 17:50:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:12,164 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 308 transitions. [2023-12-02 17:50:12,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-12-02 17:50:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 308 transitions. [2023-12-02 17:50:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:50:12,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:12,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:12,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:12,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:12,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:12,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:12,368 INFO L85 PathProgramCache]: Analyzing trace with hash -228979803, now seen corresponding path program 1 times [2023-12-02 17:50:12,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:12,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316406646] [2023-12-02 17:50:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:12,369 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 [2023-12-02 17:50:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:12,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:12,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:12,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:50:12,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:12,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 17:50:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:50:12,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:50:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:12,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:12,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:12,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316406646] [2023-12-02 17:50:12,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316406646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:12,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:12,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146497362] [2023-12-02 17:50:12,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:12,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:50:12,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:12,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:50:12,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:50:12,498 INFO L87 Difference]: Start difference. First operand 169 states and 308 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:12,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:12,698 INFO L93 Difference]: Finished difference Result 157 states and 279 transitions. [2023-12-02 17:50:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:50:12,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 17:50:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:12,701 INFO L225 Difference]: With dead ends: 157 [2023-12-02 17:50:12,701 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 17:50:12,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:50:12,703 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:12,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 17 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:50:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 17:50:12,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2023-12-02 17:50:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 129 states have (on average 2.10077519379845) internal successors, (271), 149 states have internal predecessors, (271), 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) [2023-12-02 17:50:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 271 transitions. [2023-12-02 17:50:12,715 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 271 transitions. Word has length 8 [2023-12-02 17:50:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:12,715 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 271 transitions. [2023-12-02 17:50:12,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 271 transitions. [2023-12-02 17:50:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:50:12,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:12,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:12,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 17:50:12,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:12,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:12,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash -228979802, now seen corresponding path program 1 times [2023-12-02 17:50:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:12,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439834456] [2023-12-02 17:50:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:12,921 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 [2023-12-02 17:50:12,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:12,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:12,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:12,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:50:12,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:13,010 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 [2023-12-02 17:50:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:50:13,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:50:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:13,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:13,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439834456] [2023-12-02 17:50:13,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439834456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:13,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:13,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:13,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622058935] [2023-12-02 17:50:13,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:13,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:50:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:13,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:50:13,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:50:13,093 INFO L87 Difference]: Start difference. First operand 150 states and 271 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:13,226 INFO L93 Difference]: Finished difference Result 122 states and 214 transitions. [2023-12-02 17:50:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:50:13,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 17:50:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:13,228 INFO L225 Difference]: With dead ends: 122 [2023-12-02 17:50:13,228 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 17:50:13,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:50:13,229 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 40 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:13,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 13 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 17:50:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 17:50:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 112 states have (on average 1.8928571428571428) internal successors, (212), 120 states have internal predecessors, (212), 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) [2023-12-02 17:50:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 212 transitions. [2023-12-02 17:50:13,236 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 212 transitions. Word has length 8 [2023-12-02 17:50:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:13,236 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 212 transitions. [2023-12-02 17:50:13,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 212 transitions. [2023-12-02 17:50:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:50:13,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:13,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:13,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:13,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:13,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:13,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash -229676346, now seen corresponding path program 1 times [2023-12-02 17:50:13,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:13,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270964123] [2023-12-02 17:50:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:13,439 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 [2023-12-02 17:50:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:13,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:13,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:13,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:50:13,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:13,509 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 [2023-12-02 17:50:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:50:13,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 17:50:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:13,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:13,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:13,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270964123] [2023-12-02 17:50:13,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270964123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:13,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:13,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066970221] [2023-12-02 17:50:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:50:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:50:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:50:13,550 INFO L87 Difference]: Start difference. First operand 121 states and 212 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:13,685 INFO L93 Difference]: Finished difference Result 105 states and 182 transitions. [2023-12-02 17:50:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:50:13,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 17:50:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:13,686 INFO L225 Difference]: With dead ends: 105 [2023-12-02 17:50:13,686 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 17:50:13,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:50:13,687 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:13,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 8 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 17:50:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-02 17:50:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 98 states have (on average 1.8571428571428572) internal successors, (182), 104 states have internal predecessors, (182), 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) [2023-12-02 17:50:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 182 transitions. [2023-12-02 17:50:13,693 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 182 transitions. Word has length 8 [2023-12-02 17:50:13,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:13,693 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 182 transitions. [2023-12-02 17:50:13,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 182 transitions. [2023-12-02 17:50:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:50:13,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:13,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:13,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:13,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:13,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:13,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -229676345, now seen corresponding path program 1 times [2023-12-02 17:50:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:13,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130486894] [2023-12-02 17:50:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:13,897 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 [2023-12-02 17:50:13,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:13,898 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:13,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:13,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:50:13,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:13,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 17:50:13,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:50:13,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-12-02 17:50:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:50:14,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:50:14,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:50:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130486894] [2023-12-02 17:50:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130486894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:14,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:14,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:50:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017484516] [2023-12-02 17:50:14,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:14,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:50:14,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:50:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:50:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:50:14,047 INFO L87 Difference]: Start difference. First operand 105 states and 182 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:14,173 INFO L93 Difference]: Finished difference Result 89 states and 152 transitions. [2023-12-02 17:50:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:50:14,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 17:50:14,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:14,174 INFO L225 Difference]: With dead ends: 89 [2023-12-02 17:50:14,174 INFO L226 Difference]: Without dead ends: 89 [2023-12-02 17:50:14,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:50:14,175 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:14,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 10 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-02 17:50:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-02 17:50:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.8095238095238095) internal successors, (152), 88 states have internal predecessors, (152), 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) [2023-12-02 17:50:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 152 transitions. [2023-12-02 17:50:14,180 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 152 transitions. Word has length 8 [2023-12-02 17:50:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:14,180 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 152 transitions. [2023-12-02 17:50:14,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:50:14,180 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 152 transitions. [2023-12-02 17:50:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:50:14,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:14,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:14,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-02 17:50:14,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:14,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-12-02 17:50:14,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash 332770740, now seen corresponding path program 1 times [2023-12-02 17:50:14,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:50:14,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074725252] [2023-12-02 17:50:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:14,383 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 [2023-12-02 17:50:14,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:50:14,384 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:50:14,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:50:14,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:50:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:50:14,578 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 17:50:14,578 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:50:14,579 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2023-12-02 17:50:14,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2023-12-02 17:50:14,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-12-02 17:50:14,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-12-02 17:50:14,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-12-02 17:50:14,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-12-02 17:50:14,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-12-02 17:50:14,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-12-02 17:50:14,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2023-12-02 17:50:14,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-12-02 17:50:14,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2023-12-02 17:50:14,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-12-02 17:50:14,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-12-02 17:50:14,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-12-02 17:50:14,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-12-02 17:50:14,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-12-02 17:50:14,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-12-02 17:50:14,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-12-02 17:50:14,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:14,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:50:14,790 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:14,795 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 17:50:14,795 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:50:14,812 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-12-02 17:50:14,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:50:14 BasicIcfg [2023-12-02 17:50:14,819 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:50:14,820 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:50:14,820 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:50:14,820 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:50:14,820 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:50:10" (3/4) ... [2023-12-02 17:50:14,822 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:50:14,823 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:50:14,824 INFO L158 Benchmark]: Toolchain (without parser) took 6034.49ms. Allocated memory was 77.6MB in the beginning and 132.1MB in the end (delta: 54.5MB). Free memory was 51.6MB in the beginning and 62.4MB in the end (delta: -10.8MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2023-12-02 17:50:14,824 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 77.6MB. Free memory was 54.4MB in the beginning and 54.2MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:50:14,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.38ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 51.4MB in the beginning and 69.3MB in the end (delta: -17.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:50:14,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.67ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 66.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:50:14,825 INFO L158 Benchmark]: Boogie Preprocessor took 33.08ms. Allocated memory is still 109.1MB. Free memory was 66.7MB in the beginning and 65.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:50:14,826 INFO L158 Benchmark]: RCFGBuilder took 595.92ms. Allocated memory is still 109.1MB. Free memory was 65.1MB in the beginning and 64.0MB in the end (delta: 1.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-12-02 17:50:14,826 INFO L158 Benchmark]: TraceAbstraction took 4718.91ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 63.6MB in the beginning and 62.4MB in the end (delta: 1.2MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2023-12-02 17:50:14,826 INFO L158 Benchmark]: Witness Printer took 3.46ms. Allocated memory is still 132.1MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:50:14,828 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 77.6MB. Free memory was 54.4MB in the beginning and 54.2MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.38ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 51.4MB in the beginning and 69.3MB in the end (delta: -17.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.67ms. Allocated memory is still 109.1MB. Free memory was 69.3MB in the beginning and 66.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.08ms. Allocated memory is still 109.1MB. Free memory was 66.7MB in the beginning and 65.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 595.92ms. Allocated memory is still 109.1MB. Free memory was 65.1MB in the beginning and 64.0MB in the end (delta: 1.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4718.91ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 63.6MB in the beginning and 62.4MB in the end (delta: 1.2MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Witness Printer took 3.46ms. Allocated memory is still 132.1MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 3008]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3008. Possible FailurePath: [L2989-L2993] 0 struct s { int datum; pthread_mutex_t mutex; int list; } *A; [L3009] 0 pthread_t t1; [L3010] 0 A = malloc(sizeof(struct s)) [L3011] CALL 0 init(A,666) [L2995] 0 p->datum = x [L3011] RET 0 init(A,666) [L3012] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={1:0}, t1={3:0}] [L3013] CALL 0 update(&A->list) [L2999] 0 struct s *s = ((struct s *)((char *)(p)-(unsigned long)__builtin_offsetof (struct s, list))); VAL [A={1:0}, p={1:28}, p={1:28}, s={1:0}] [L3001] EXPR 0 s->datum [L3001] 0 s->datum++ [L3013] RET 0 update(&A->list) [L3014] 0 return 0; [L3014] 0 return 0; VAL [A={1:0}, \result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3012]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 47 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 342 IncrementalHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 73 mSDtfsCounter, 342 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 34 ConstructedInterpolants, 2 QuantifiedInterpolants, 290 SizeOfPredicates, 42 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 17:50:14,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3f1e41-8f84-4223-bdd9-6e2be0e7fd66/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample