./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:12:50,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:12:50,589 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 13:12:50,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:12:50,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:12:50,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:12:50,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:12:50,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:12:50,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:12:50,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:12:50,626 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:12:50,626 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:12:50,627 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:12:50,627 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:12:50,628 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:12:50,628 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:12:50,629 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:12:50,629 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:12:50,630 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:12:50,630 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:12:50,631 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:12:50,632 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:12:50,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:12:50,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:12:50,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:12:50,634 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:12:50,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:12:50,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:12:50,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:12:50,635 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:12:50,636 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:12:50,636 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:12:50,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:12:50,637 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:12:50,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:12:50,637 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:12:50,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:12:50,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:12:50,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:12:50,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:12:50,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:12:50,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:12:50,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:12:50,639 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:12:50,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:12:50,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:12:50,640 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:12:50,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:12:50,640 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_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2023-12-02 13:12:50,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:12:50,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:12:50,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:12:50,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:12:50,880 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:12:50,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2023-12-02 13:12:53,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:12:53,897 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:12:53,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2023-12-02 13:12:53,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data/7479cf5aa/158dae11c8154dd28280249d329ca0d1/FLAGb04387a4c [2023-12-02 13:12:53,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data/7479cf5aa/158dae11c8154dd28280249d329ca0d1 [2023-12-02 13:12:53,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:12:53,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:12:53,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:12:53,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:12:53,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:12:53,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:12:53" (1/1) ... [2023-12-02 13:12:53,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39dbf37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:53, skipping insertion in model container [2023-12-02 13:12:53,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:12:53" (1/1) ... [2023-12-02 13:12:53,992 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:12:54,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:12:54,330 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 13:12:54,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ed2d8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:54, skipping insertion in model container [2023-12-02 13:12:54,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:12:54,332 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 13:12:54,333 INFO L158 Benchmark]: Toolchain (without parser) took 400.84ms. Allocated memory is still 163.6MB. Free memory was 125.9MB in the beginning and 111.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 13:12:54,334 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:12:54,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.48ms. Allocated memory is still 163.6MB. Free memory was 125.6MB in the beginning and 111.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 13:12:54,336 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.48ms. Allocated memory is still 163.6MB. Free memory was 125.6MB in the beginning and 111.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:12:56,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:12:56,168 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 13:12:56,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:12:56,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:12:56,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:12:56,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:12:56,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:12:56,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:12:56,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:12:56,208 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:12:56,208 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:12:56,209 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:12:56,209 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:12:56,210 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:12:56,210 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:12:56,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:12:56,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:12:56,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:12:56,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:12:56,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:12:56,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:12:56,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:12:56,214 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:12:56,215 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:12:56,215 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:12:56,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:12:56,216 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:12:56,216 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:12:56,217 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:12:56,217 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:12:56,217 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:12:56,218 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:12:56,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:12:56,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:12:56,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:12:56,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:12:56,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:12:56,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:12:56,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:12:56,220 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:12:56,220 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:12:56,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:12:56,220 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:12:56,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:12:56,221 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_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2023-12-02 13:12:56,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:12:56,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:12:56,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:12:56,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:12:56,546 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:12:56,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2023-12-02 13:12:59,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:12:59,591 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:12:59,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2023-12-02 13:12:59,610 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data/7f53b67ce/feac5c3ec19e44d491b3091eb17cc06a/FLAG5fe1cabc2 [2023-12-02 13:12:59,625 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/data/7f53b67ce/feac5c3ec19e44d491b3091eb17cc06a [2023-12-02 13:12:59,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:12:59,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:12:59,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:12:59,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:12:59,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:12:59,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:12:59" (1/1) ... [2023-12-02 13:12:59,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@711045e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:59, skipping insertion in model container [2023-12-02 13:12:59,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:12:59" (1/1) ... [2023-12-02 13:12:59,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:13:00,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:13:00,112 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:13:00,132 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:13:00,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:13:00,182 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:13:00,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:13:00,293 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:13:00,307 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:13:00,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00 WrapperNode [2023-12-02 13:13:00,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:13:00,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:13:00,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:13:00,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:13:00,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,364 INFO L138 Inliner]: procedures = 169, calls = 77, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 56 [2023-12-02 13:13:00,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:13:00,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:13:00,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:13:00,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:13:00,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:13:00,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:13:00,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:13:00,394 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:13:00,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (1/1) ... [2023-12-02 13:13:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:13:00,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:13:00,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:13:00,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:13:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 13:13:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 13:13:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:13:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:13:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:13:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:13:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:13:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:13:00,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:13:00,605 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:13:00,608 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:13:00,786 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:13:00,826 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:13:00,826 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:13:00,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:13:00 BoogieIcfgContainer [2023-12-02 13:13:00,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:13:00,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:13:00,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:13:00,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:13:00,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:12:59" (1/3) ... [2023-12-02 13:13:00,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfd88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:13:00, skipping insertion in model container [2023-12-02 13:13:00,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:13:00" (2/3) ... [2023-12-02 13:13:00,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfd88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:13:00, skipping insertion in model container [2023-12-02 13:13:00,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:13:00" (3/3) ... [2023-12-02 13:13:00,836 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test6_3.i [2023-12-02 13:13:00,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:13:00,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-02 13:13:00,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:13:00,915 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;@36c22a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:13:00,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-02 13:13:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:13:00,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:00,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:00,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 693382370, now seen corresponding path program 1 times [2023-12-02 13:13:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:00,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675022946] [2023-12-02 13:13:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:00,950 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 13:13:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:00,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:00,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:01,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:13:01,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:01,141 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 13:13:01,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:01,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:01,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675022946] [2023-12-02 13:13:01,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675022946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:01,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:13:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917169531] [2023-12-02 13:13:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:01,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:13:01,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:13:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:13:01,185 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:01,286 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-12-02 13:13:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:13:01,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-02 13:13:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:01,296 INFO L225 Difference]: With dead ends: 26 [2023-12-02 13:13:01,297 INFO L226 Difference]: Without dead ends: 25 [2023-12-02 13:13:01,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:13:01,303 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:01,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:13:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-02 13:13:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-02 13:13:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.6875) internal successors, (27), 22 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-12-02 13:13:01,337 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 10 [2023-12-02 13:13:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:01,337 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-12-02 13:13:01,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:01,338 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-12-02 13:13:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:13:01,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:01,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:01,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:01,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:01,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:01,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:01,542 INFO L85 PathProgramCache]: Analyzing trace with hash 20061042, now seen corresponding path program 1 times [2023-12-02 13:13:01,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:01,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55642307] [2023-12-02 13:13:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:01,543 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 13:13:01,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:01,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:01,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:01,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:13:01,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:01,729 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-12-02 13:13:01,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:13:01,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 13:13:01,874 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 13:13:01,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:01,874 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55642307] [2023-12-02 13:13:01,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55642307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:01,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:01,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:13:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240632933] [2023-12-02 13:13:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:01,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:13:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:13:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-12-02 13:13:01,878 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:01,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:01,993 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-12-02 13:13:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:13:01,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 13:13:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:01,995 INFO L225 Difference]: With dead ends: 37 [2023-12-02 13:13:01,995 INFO L226 Difference]: Without dead ends: 37 [2023-12-02 13:13:01,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-12-02 13:13:01,997 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 23 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:01,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 62 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2023-12-02 13:13:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-02 13:13:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2023-12-02 13:13:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 27 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:13:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-02 13:13:02,004 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2023-12-02 13:13:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:02,005 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-02 13:13:02,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-02 13:13:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:13:02,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:02,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:02,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:02,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:02,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 20061041, now seen corresponding path program 1 times [2023-12-02 13:13:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:02,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656285841] [2023-12-02 13:13:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:02,210 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 13:13:02,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:02,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:02,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:02,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:13:02,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:02,325 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-12-02 13:13:02,362 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:13:02,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 13:13:02,412 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 13:13:02,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:02,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:02,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656285841] [2023-12-02 13:13:02,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656285841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:02,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:02,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:13:02,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044316661] [2023-12-02 13:13:02,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:02,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:13:02,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:13:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-12-02 13:13:02,415 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:02,473 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2023-12-02 13:13:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:13:02,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 13:13:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:02,475 INFO L225 Difference]: With dead ends: 31 [2023-12-02 13:13:02,476 INFO L226 Difference]: Without dead ends: 31 [2023-12-02 13:13:02,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-12-02 13:13:02,479 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:02,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 34 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2023-12-02 13:13:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-02 13:13:02,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2023-12-02 13:13:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-02 13:13:02,485 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 11 [2023-12-02 13:13:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:02,485 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-02 13:13:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-02 13:13:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:13:02,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:02,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:02,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:13:02,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:02,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:02,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash 20017058, now seen corresponding path program 1 times [2023-12-02 13:13:02,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:02,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199404718] [2023-12-02 13:13:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:02,690 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 13:13:02,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:02,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:02,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:02,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:13:02,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:02,848 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 13:13:02,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:02,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199404718] [2023-12-02 13:13:02,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199404718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:02,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:02,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:13:02,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444586838] [2023-12-02 13:13:02,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:02,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:13:02,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:13:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:13:02,851 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:02,971 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2023-12-02 13:13:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:13:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 13:13:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:02,973 INFO L225 Difference]: With dead ends: 35 [2023-12-02 13:13:02,973 INFO L226 Difference]: Without dead ends: 35 [2023-12-02 13:13:02,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:13:02,974 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:02,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 52 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:13:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-02 13:13:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-12-02 13:13:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:13:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-12-02 13:13:02,980 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 11 [2023-12-02 13:13:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:02,980 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-12-02 13:13:02,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-12-02 13:13:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:13:02,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:02,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:02,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:03,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:03,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1762827393, now seen corresponding path program 1 times [2023-12-02 13:13:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:03,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737137821] [2023-12-02 13:13:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:03,184 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 13:13:03,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:03,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:03,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:13:03,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:03,294 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 13:13:03,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:03,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:03,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737137821] [2023-12-02 13:13:03,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737137821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:03,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:03,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:13:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607385457] [2023-12-02 13:13:03,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:03,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:13:03,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:13:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:13:03,297 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:03,378 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2023-12-02 13:13:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:13:03,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 13:13:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:03,383 INFO L225 Difference]: With dead ends: 27 [2023-12-02 13:13:03,384 INFO L226 Difference]: Without dead ends: 27 [2023-12-02 13:13:03,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:13:03,385 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 72 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 13:13:03,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:13:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-02 13:13:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-12-02 13:13:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 22 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:13:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-12-02 13:13:03,391 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2023-12-02 13:13:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:03,392 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-12-02 13:13:03,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-12-02 13:13:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:13:03,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:03,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:03,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:03,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1761240239, now seen corresponding path program 1 times [2023-12-02 13:13:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:03,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045747626] [2023-12-02 13:13:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:03,596 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 13:13:03,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:03,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:03,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:13:03,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:03,731 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 13:13:03,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:03,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045747626] [2023-12-02 13:13:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045747626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:13:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128786862] [2023-12-02 13:13:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:13:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:13:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:13:03,733 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:03,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:03,810 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-12-02 13:13:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:13:03,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 13:13:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:03,811 INFO L225 Difference]: With dead ends: 32 [2023-12-02 13:13:03,811 INFO L226 Difference]: Without dead ends: 32 [2023-12-02 13:13:03,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 13:13:03,812 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:03,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:13:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-02 13:13:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-12-02 13:13:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 25 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:13:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-12-02 13:13:03,817 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 11 [2023-12-02 13:13:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:03,818 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-12-02 13:13:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-02 13:13:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:13:03,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:03,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:03,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:04,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1761240240, now seen corresponding path program 1 times [2023-12-02 13:13:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:04,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971514817] [2023-12-02 13:13:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:04,025 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 13:13:04,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:04,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:04,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:13:04,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:04,181 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 13:13:04,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:04,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971514817] [2023-12-02 13:13:04,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971514817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:04,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:04,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:13:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647811735] [2023-12-02 13:13:04,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:04,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:13:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:13:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:13:04,183 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:04,274 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-12-02 13:13:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:13:04,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 13:13:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:04,276 INFO L225 Difference]: With dead ends: 34 [2023-12-02 13:13:04,276 INFO L226 Difference]: Without dead ends: 34 [2023-12-02 13:13:04,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 13:13:04,277 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:04,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 47 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:13:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-02 13:13:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-12-02 13:13:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.4) internal successors, (35), 28 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:13:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2023-12-02 13:13:04,283 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2023-12-02 13:13:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:04,283 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2023-12-02 13:13:04,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-12-02 13:13:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 13:13:04,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:04,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:04,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:04,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash 620528868, now seen corresponding path program 1 times [2023-12-02 13:13:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557160087] [2023-12-02 13:13:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:04,487 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 13:13:04,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:04,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:04,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:13:04,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:04,549 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 13:13:04,591 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 13:13:04,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:04,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:04,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557160087] [2023-12-02 13:13:04,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557160087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:04,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:04,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:13:04,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013429355] [2023-12-02 13:13:04,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:04,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:13:04,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:04,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:13:04,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:13:04,595 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:04,674 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-12-02 13:13:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:13:04,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 13:13:04,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:04,676 INFO L225 Difference]: With dead ends: 31 [2023-12-02 13:13:04,676 INFO L226 Difference]: Without dead ends: 31 [2023-12-02 13:13:04,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:13:04,677 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:04,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 47 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:13:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-02 13:13:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-02 13:13:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.36) internal successors, (34), 27 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:13:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-12-02 13:13:04,681 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 12 [2023-12-02 13:13:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:04,681 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-12-02 13:13:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-12-02 13:13:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 13:13:04,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:04,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:04,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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)] Ended with exit code 0 [2023-12-02 13:13:04,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:04,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:04,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1236127010, now seen corresponding path program 1 times [2023-12-02 13:13:04,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:04,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585062927] [2023-12-02 13:13:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:04,884 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 13:13:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:04,885 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:04,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:13:04,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:04,953 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 13:13:04,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:04,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:04,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585062927] [2023-12-02 13:13:04,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585062927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:04,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:04,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:13:04,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609497977] [2023-12-02 13:13:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:04,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:13:04,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:04,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:13:04,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:13:04,955 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:05,012 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-12-02 13:13:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:13:05,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 13:13:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:05,014 INFO L225 Difference]: With dead ends: 32 [2023-12-02 13:13:05,014 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 13:13:05,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:13:05,015 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:05,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:13:05,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 13:13:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-02 13:13:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-12-02 13:13:05,019 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2023-12-02 13:13:05,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:05,019 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-12-02 13:13:05,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-02 13:13:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 13:13:05,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:05,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:05,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:05,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:05,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:05,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:05,221 INFO L85 PathProgramCache]: Analyzing trace with hash 639162488, now seen corresponding path program 1 times [2023-12-02 13:13:05,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:05,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942115301] [2023-12-02 13:13:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:05,222 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 13:13:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:05,222 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:05,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 (11)] Waiting until timeout for monitored process [2023-12-02 13:13:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:05,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:13:05,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:05,291 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 13:13:05,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:05,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:05,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942115301] [2023-12-02 13:13:05,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942115301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:05,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:05,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:13:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163057095] [2023-12-02 13:13:05,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:13:05,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:13:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:13:05,293 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:05,341 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-12-02 13:13:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:13:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-02 13:13:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:05,343 INFO L225 Difference]: With dead ends: 30 [2023-12-02 13:13:05,343 INFO L226 Difference]: Without dead ends: 30 [2023-12-02 13:13:05,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 13:13:05,344 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:05,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 49 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:13:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-02 13:13:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2023-12-02 13:13:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-12-02 13:13:05,348 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2023-12-02 13:13:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:05,348 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-12-02 13:13:05,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-12-02 13:13:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 13:13:05,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:05,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:05,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 (11)] Ended with exit code 0 [2023-12-02 13:13:05,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:05,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:05,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 639162984, now seen corresponding path program 1 times [2023-12-02 13:13:05,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:05,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145265815] [2023-12-02 13:13:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:05,553 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 13:13:05,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:05,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:05,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 (12)] Waiting until timeout for monitored process [2023-12-02 13:13:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:05,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:13:05,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:05,713 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 13:13:05,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:05,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:13:05,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145265815] [2023-12-02 13:13:05,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145265815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:05,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:13:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797961243] [2023-12-02 13:13:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:13:05,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:13:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:13:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:13:05,715 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:05,778 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-12-02 13:13:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:13:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-02 13:13:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:05,780 INFO L225 Difference]: With dead ends: 24 [2023-12-02 13:13:05,780 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 13:13:05,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:13:05,781 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:05,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:13:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 13:13:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-02 13:13:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-12-02 13:13:05,784 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2023-12-02 13:13:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:05,785 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-12-02 13:13:05,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:13:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-12-02 13:13:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 13:13:05,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:05,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:05,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 (12)] Ended with exit code 0 [2023-12-02 13:13:05,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:05,988 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2023-12-02 13:13:05,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1660783578, now seen corresponding path program 1 times [2023-12-02 13:13:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:13:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350901956] [2023-12-02 13:13:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:05,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:13:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:13:05,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:05,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 (13)] Waiting until timeout for monitored process [2023-12-02 13:13:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:13:06,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:13:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:13:06,114 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 13:13:06,115 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:13:06,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-12-02 13:13:06,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-12-02 13:13:06,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-12-02 13:13:06,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (4 of 8 remaining) [2023-12-02 13:13:06,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (3 of 8 remaining) [2023-12-02 13:13:06,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 8 remaining) [2023-12-02 13:13:06,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2023-12-02 13:13:06,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 8 remaining) [2023-12-02 13:13:06,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 (13)] Ended with exit code 0 [2023-12-02 13:13:06,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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 13:13:06,320 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:06,323 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:13:06,337 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret44 [2023-12-02 13:13:06,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:13:06 BoogieIcfgContainer [2023-12-02 13:13:06,343 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:13:06,344 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:13:06,344 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:13:06,344 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:13:06,344 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:13:00" (3/4) ... [2023-12-02 13:13:06,346 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:13:06,347 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:13:06,348 INFO L158 Benchmark]: Toolchain (without parser) took 6719.39ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 75.2MB in the beginning and 96.9MB in the end (delta: -21.6MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-12-02 13:13:06,348 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:13:06,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 678.69ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.6MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2023-12-02 13:13:06,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.28ms. Allocated memory is still 100.7MB. Free memory was 73.4MB in the beginning and 71.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:13:06,349 INFO L158 Benchmark]: Boogie Preprocessor took 27.95ms. Allocated memory is still 100.7MB. Free memory was 71.3MB in the beginning and 69.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:13:06,349 INFO L158 Benchmark]: RCFGBuilder took 432.97ms. Allocated memory is still 100.7MB. Free memory was 69.8MB in the beginning and 53.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 13:13:06,350 INFO L158 Benchmark]: TraceAbstraction took 5513.62ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 52.4MB in the beginning and 96.9MB in the end (delta: -44.5MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2023-12-02 13:13:06,350 INFO L158 Benchmark]: Witness Printer took 3.47ms. Allocated memory is still 123.7MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:13:06,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 678.69ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.6MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.28ms. Allocated memory is still 100.7MB. Free memory was 73.4MB in the beginning and 71.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.95ms. Allocated memory is still 100.7MB. Free memory was 71.3MB in the beginning and 69.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 432.97ms. Allocated memory is still 100.7MB. Free memory was 69.8MB in the beginning and 53.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5513.62ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 52.4MB in the beginning and 96.9MB in the end (delta: -44.5MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Witness Printer took 3.47ms. Allocated memory is still 123.7MB. Free memory is still 96.9MB. 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: unknown boogie variable #t~ret44 - 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: 790]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 790. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L782] struct A a6; [L791] CALL entry_point() [L784] CALL, EXPR probe1_6(&a6) [L764] int ret = - -3; VAL [a6={2:0}, a={2:0}, a={2:0}, ldv_global_msg_list={1:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a6={2:0}, a={2:0}, a={2:0}, ldv_global_msg_list={1:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [a6={2:0}, a={2:0}, a={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L774] a->p = p [L775] return 0; VAL [\result=0, a6={2:0}, a={2:0}, a={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L784] RET, EXPR probe1_6(&a6) [L784] int ret = probe1_6(&a6); [L785] COND TRUE ret==0 [L786] FCALL disconnect_2_6(&a6) [L788] a6.p = 0 [L791] RET entry_point() - 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: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 530 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 80 IncrementalHoareTripleChecker+Unchecked, 321 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 393 IncrementalHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 209 mSDtfsCounter, 393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=7, InterpolantAutomatonStates: 55, 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, 11 MinimizatonAttempts, 30 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 117 ConstructedInterpolants, 4 QuantifiedInterpolants, 743 SizeOfPredicates, 13 NumberOfNonLiveVariables, 579 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 13:13:06,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de41d71-6f8a-42b3-939a-75c4b2fc6c92/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