./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:06:55,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:06:55,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:06:55,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:06:55,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:06:55,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:06:55,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:06:55,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:06:55,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:06:55,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:06:55,766 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:06:55,767 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:06:55,767 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:06:55,768 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:06:55,769 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:06:55,769 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:06:55,770 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:06:55,770 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:06:55,771 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:06:55,771 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:06:55,772 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:06:55,773 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:06:55,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:06:55,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:06:55,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:06:55,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:06:55,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:06:55,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:06:55,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:06:55,776 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:06:55,777 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:06:55,777 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:06:55,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:06:55,778 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:06:55,778 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:06:55,779 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:06:55,779 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:06:55,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:06:55,780 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:06:55,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:55,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:06:55,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:06:55,782 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:06:55,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:06:55,783 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:06:55,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:06:55,783 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_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2023-11-06 21:06:56,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:06:56,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:06:56,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:06:56,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:06:56,088 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:06:56,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-06 21:06:59,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:06:59,529 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:06:59,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-06 21:06:59,555 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data/e32df3f89/7e4e4d8d9c274201ad9af8b1db92d78c/FLAGca83df359 [2023-11-06 21:06:59,572 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data/e32df3f89/7e4e4d8d9c274201ad9af8b1db92d78c [2023-11-06 21:06:59,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:06:59,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:06:59,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:59,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:06:59,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:06:59,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:59" (1/1) ... [2023-11-06 21:06:59,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ba2f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:59, skipping insertion in model container [2023-11-06 21:06:59,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:59" (1/1) ... [2023-11-06 21:06:59,669 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:00,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:00,154 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) [2023-11-06 21:07:00,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69f7d024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:00, skipping insertion in model container [2023-11-06 21:07:00,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:00,155 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:07:00,157 INFO L158 Benchmark]: Toolchain (without parser) took 579.99ms. Allocated memory is still 161.5MB. Free memory was 122.6MB in the beginning and 108.4MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:07:00,158 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:00,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.49ms. Allocated memory is still 161.5MB. Free memory was 122.2MB in the beginning and 108.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:07:00,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.49ms. Allocated memory is still 161.5MB. Free memory was 122.2MB in the beginning and 108.4MB in the end (delta: 13.8MB). 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:07:02,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:07:02,704 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 21:07:02,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:07:02,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:07:02,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:07:02,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:07:02,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:07:02,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:07:02,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:07:02,764 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:07:02,764 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:07:02,765 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:07:02,766 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:07:02,767 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:07:02,767 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:07:02,768 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:07:02,768 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:07:02,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:07:02,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:07:02,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:07:02,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:07:02,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:07:02,772 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:07:02,773 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:07:02,773 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:07:02,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:07:02,774 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:07:02,774 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:07:02,775 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:07:02,776 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:07:02,776 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:07:02,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:07:02,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:07:02,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:07:02,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:07:02,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:02,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:07:02,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:07:02,778 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:07:02,778 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:07:02,778 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:07:02,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:07:02,779 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_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2023-11-06 21:07:03,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:07:03,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:07:03,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:07:03,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:07:03,211 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:07:03,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-06 21:07:06,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:06,870 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:06,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-06 21:07:06,889 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data/f492b4709/799e24827f284354b8e82c179834ed3c/FLAG993b81818 [2023-11-06 21:07:06,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/data/f492b4709/799e24827f284354b8e82c179834ed3c [2023-11-06 21:07:06,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:06,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:06,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:06,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:06,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:06,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:06" (1/1) ... [2023-11-06 21:07:06,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14756cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:06, skipping insertion in model container [2023-11-06 21:07:06,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:06" (1/1) ... [2023-11-06 21:07:06,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:07,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:07,646 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:07:07,676 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:07,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:07,790 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:07,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:07,914 WARN L672 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:07:07,930 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:07,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07 WrapperNode [2023-11-06 21:07:07,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:07,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:07,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:07,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:07,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:07,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:07,998 INFO L138 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 62 [2023-11-06 21:07:07,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:07,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:07,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:07,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:08,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:08,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:08,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:08,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:08,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (1/1) ... [2023-11-06 21:07:08,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:08,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:08,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:08,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 21:07:08,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 21:07:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:07:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:07:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:07:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:07:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 21:07:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:08,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:08,338 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:08,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:08,622 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:08,628 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:08,629 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:07:08,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:08 BoogieIcfgContainer [2023-11-06 21:07:08,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:08,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:08,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:08,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:08,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:06" (1/3) ... [2023-11-06 21:07:08,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6dcea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:08, skipping insertion in model container [2023-11-06 21:07:08,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:07" (2/3) ... [2023-11-06 21:07:08,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6dcea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:08, skipping insertion in model container [2023-11-06 21:07:08,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:08" (3/3) ... [2023-11-06 21:07:08,641 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2023-11-06 21:07:08,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:08,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-06 21:07:08,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:08,715 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;@1b40eaf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:08,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 21:07:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) [2023-11-06 21:07:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:07:08,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:08,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:08,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:08,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1405574468, now seen corresponding path program 1 times [2023-11-06 21:07:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358648253] [2023-11-06 21:07:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:08,754 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 [2023-11-06 21:07:08,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:08,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:08,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:08,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:07:08,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:09,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:09,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358648253] [2023-11-06 21:07:09,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358648253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:09,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:09,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:09,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457916854] [2023-11-06 21:07:09,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:09,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:09,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:09,099 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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, 5 states have (on average 2.0) 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) [2023-11-06 21:07:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:09,209 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2023-11-06 21:07:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) 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 [2023-11-06 21:07:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:09,222 INFO L225 Difference]: With dead ends: 61 [2023-11-06 21:07:09,222 INFO L226 Difference]: Without dead ends: 59 [2023-11-06 21:07:09,224 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 [2023-11-06 21:07:09,236 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 17 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:09,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 155 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-06 21:07:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2023-11-06 21:07:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 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) [2023-11-06 21:07:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-11-06 21:07:09,286 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2023-11-06 21:07:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:09,287 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-11-06 21:07:09,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) 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) [2023-11-06 21:07:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-11-06 21:07:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:07:09,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:09,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:09,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:09,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:09,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:09,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:09,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1405608821, now seen corresponding path program 1 times [2023-11-06 21:07:09,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:09,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864611874] [2023-11-06 21:07:09,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:09,505 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 [2023-11-06 21:07:09,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:09,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:09,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:09,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:07:09,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:09,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:09,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:09,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864611874] [2023-11-06 21:07:09,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864611874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:09,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:09,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:09,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863554799] [2023-11-06 21:07:09,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:09,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:09,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:09,647 INFO L87 Difference]: Start difference. First operand 45 states and 49 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) [2023-11-06 21:07:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:09,703 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-11-06 21:07:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:09,704 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 [2023-11-06 21:07:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:09,705 INFO L225 Difference]: With dead ends: 44 [2023-11-06 21:07:09,705 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 21:07:09,706 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 [2023-11-06 21:07:09,707 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:09,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 135 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 21:07:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-06 21:07:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 40 states have internal predecessors, (45), 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) [2023-11-06 21:07:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-11-06 21:07:09,714 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2023-11-06 21:07:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:09,714 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-11-06 21:07:09,714 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) [2023-11-06 21:07:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-11-06 21:07:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:07:09,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:09,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:09,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:09,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:09,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:09,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582493, now seen corresponding path program 1 times [2023-11-06 21:07:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846960864] [2023-11-06 21:07:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:09,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:07:09,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:09,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:09,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:10,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:07:10,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:10,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:10,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846960864] [2023-11-06 21:07:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846960864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:10,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:10,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306753608] [2023-11-06 21:07:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:10,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:10,145 INFO L87 Difference]: Start difference. First operand 44 states and 48 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) [2023-11-06 21:07:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:10,257 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2023-11-06 21:07:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:10,258 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 [2023-11-06 21:07:10,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:10,259 INFO L225 Difference]: With dead ends: 60 [2023-11-06 21:07:10,260 INFO L226 Difference]: Without dead ends: 60 [2023-11-06 21:07:10,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:10,261 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:10,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 64 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-06 21:07:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2023-11-06 21:07:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.5625) internal successors, (50), 43 states have internal predecessors, (50), 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) [2023-11-06 21:07:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2023-11-06 21:07:10,269 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2023-11-06 21:07:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:10,270 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2023-11-06 21:07:10,270 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) [2023-11-06 21:07:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2023-11-06 21:07:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:07:10,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:10,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:10,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:10,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:10,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:10,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:10,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582492, now seen corresponding path program 1 times [2023-11-06 21:07:10,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:10,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265680660] [2023-11-06 21:07:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:10,477 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 [2023-11-06 21:07:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:10,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:10,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:10,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:07:10,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:10,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:10,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:10,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265680660] [2023-11-06 21:07:10,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265680660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:10,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:10,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:10,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469488895] [2023-11-06 21:07:10,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:10,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:10,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:10,755 INFO L87 Difference]: Start difference. First operand 47 states and 53 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) [2023-11-06 21:07:10,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:10,899 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-11-06 21:07:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:10,900 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 [2023-11-06 21:07:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:10,901 INFO L225 Difference]: With dead ends: 80 [2023-11-06 21:07:10,901 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 21:07:10,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:10,903 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:10,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 126 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 21:07:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2023-11-06 21:07:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 63 states have internal predecessors, (84), 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) [2023-11-06 21:07:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2023-11-06 21:07:10,913 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2023-11-06 21:07:10,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:10,914 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2023-11-06 21:07:10,914 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) [2023-11-06 21:07:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2023-11-06 21:07:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:07:10,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:10,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:10,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:11,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:11,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582909, now seen corresponding path program 1 times [2023-11-06 21:07:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:11,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133592598] [2023-11-06 21:07:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:11,129 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 [2023-11-06 21:07:11,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:11,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:11,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:11,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:07:11,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:11,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:11,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133592598] [2023-11-06 21:07:11,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133592598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:11,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:11,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:11,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828948970] [2023-11-06 21:07:11,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:11,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:11,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:11,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:11,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:11,226 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:07:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:11,273 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-11-06 21:07:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:07:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2023-11-06 21:07:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:11,276 INFO L225 Difference]: With dead ends: 73 [2023-11-06 21:07:11,276 INFO L226 Difference]: Without dead ends: 73 [2023-11-06 21:07:11,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:11,278 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:11,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 148 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-06 21:07:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2023-11-06 21:07:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 65 states have internal predecessors, (86), 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) [2023-11-06 21:07:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2023-11-06 21:07:11,288 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 12 [2023-11-06 21:07:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:11,289 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2023-11-06 21:07:11,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:07:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2023-11-06 21:07:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:07:11,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:11,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:11,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:11,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:11,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:11,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 624200559, now seen corresponding path program 1 times [2023-11-06 21:07:11,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:11,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716756738] [2023-11-06 21:07:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:11,493 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 [2023-11-06 21:07:11,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:11,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:11,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:11,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:07:11,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:11,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:11,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716756738] [2023-11-06 21:07:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716756738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:11,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:11,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489969016] [2023-11-06 21:07:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:11,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:07:11,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:07:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:07:11,697 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-06 21:07:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:11,804 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2023-11-06 21:07:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:07:11,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2023-11-06 21:07:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:11,806 INFO L225 Difference]: With dead ends: 72 [2023-11-06 21:07:11,806 INFO L226 Difference]: Without dead ends: 72 [2023-11-06 21:07:11,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:07:11,807 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:11,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 123 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-06 21:07:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2023-11-06 21:07:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 65 states have internal predecessors, (85), 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) [2023-11-06 21:07:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2023-11-06 21:07:11,815 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 13 [2023-11-06 21:07:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:11,815 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2023-11-06 21:07:11,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-06 21:07:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2023-11-06 21:07:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:07:11,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:11,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:11,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:12,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:12,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:12,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1183253904, now seen corresponding path program 1 times [2023-11-06 21:07:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:12,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127559654] [2023-11-06 21:07:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:12,036 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 [2023-11-06 21:07:12,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:12,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:12,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:12,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:07:12,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:12,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:12,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:12,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127559654] [2023-11-06 21:07:12,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127559654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:12,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:12,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566002856] [2023-11-06 21:07:12,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:12,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:12,141 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-06 21:07:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:12,175 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2023-11-06 21:07:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2023-11-06 21:07:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:12,177 INFO L225 Difference]: With dead ends: 49 [2023-11-06 21:07:12,177 INFO L226 Difference]: Without dead ends: 49 [2023-11-06 21:07:12,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:12,178 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:12,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 160 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-06 21:07:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-06 21:07:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.457142857142857) internal successors, (51), 45 states have internal predecessors, (51), 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) [2023-11-06 21:07:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-06 21:07:12,183 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 13 [2023-11-06 21:07:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:12,184 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-06 21:07:12,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-06 21:07:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-06 21:07:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 21:07:12,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:12,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:12,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:12,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:12,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2124619081, now seen corresponding path program 1 times [2023-11-06 21:07:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816806333] [2023-11-06 21:07:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:12,398 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 [2023-11-06 21:07:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:12,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:12,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:12,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:07:12,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:12,525 INFO L351 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 [2023-11-06 21:07:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:12,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:12,582 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816806333] [2023-11-06 21:07:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816806333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:12,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545109324] [2023-11-06 21:07:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:12,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:12,589 INFO L87 Difference]: Start difference. First operand 49 states and 54 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) [2023-11-06 21:07:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:12,697 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-11-06 21:07:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:12,698 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 [2023-11-06 21:07:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:12,699 INFO L225 Difference]: With dead ends: 48 [2023-11-06 21:07:12,699 INFO L226 Difference]: Without dead ends: 48 [2023-11-06 21:07:12,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:12,700 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:12,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 101 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-06 21:07:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-11-06 21:07:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 44 states have internal predecessors, (50), 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) [2023-11-06 21:07:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2023-11-06 21:07:12,708 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 14 [2023-11-06 21:07:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:12,709 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2023-11-06 21:07:12,709 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) [2023-11-06 21:07:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2023-11-06 21:07:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 21:07:12,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:12,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:12,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:12,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:12,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571317, now seen corresponding path program 1 times [2023-11-06 21:07:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648663684] [2023-11-06 21:07:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:12,922 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 [2023-11-06 21:07:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:12,923 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:12,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:13,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 21:07:13,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:13,171 WARN L861 $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 [2023-11-06 21:07:13,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:07:13,217 INFO L351 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 [2023-11-06 21:07:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:13,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:13,311 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:13,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648663684] [2023-11-06 21:07:13,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648663684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:13,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:13,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:13,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635877436] [2023-11-06 21:07:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:13,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:07:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:07:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-06 21:07:13,313 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2023-11-06 21:07:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:13,579 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2023-11-06 21:07:13,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:07:13,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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 [2023-11-06 21:07:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:13,580 INFO L225 Difference]: With dead ends: 58 [2023-11-06 21:07:13,580 INFO L226 Difference]: Without dead ends: 58 [2023-11-06 21:07:13,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2023-11-06 21:07:13,581 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 48 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:13,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 108 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2023-11-06 21:07:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-06 21:07:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2023-11-06 21:07:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 41 states have internal predecessors, (46), 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) [2023-11-06 21:07:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-11-06 21:07:13,587 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 14 [2023-11-06 21:07:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:13,587 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-11-06 21:07:13,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2023-11-06 21:07:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-11-06 21:07:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 21:07:13,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:13,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:13,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:13,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:13,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:13,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1940820388, now seen corresponding path program 1 times [2023-11-06 21:07:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:13,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386194393] [2023-11-06 21:07:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:13,797 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 [2023-11-06 21:07:13,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:13,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:13,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:13,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:07:13,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:13,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:13,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:13,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386194393] [2023-11-06 21:07:13,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386194393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:13,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:13,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:07:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267815625] [2023-11-06 21:07:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:13,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:13,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:13,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:13,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:13,900 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2023-11-06 21:07:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:13,960 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2023-11-06 21:07:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:13,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 [2023-11-06 21:07:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:13,962 INFO L225 Difference]: With dead ends: 48 [2023-11-06 21:07:13,962 INFO L226 Difference]: Without dead ends: 39 [2023-11-06 21:07:13,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:13,963 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:13,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-06 21:07:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-06 21:07:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 36 states have internal predecessors, (40), 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) [2023-11-06 21:07:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-06 21:07:13,967 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 14 [2023-11-06 21:07:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:13,967 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-06 21:07:13,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2023-11-06 21:07:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-06 21:07:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:07:13,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:13,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:13,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:14,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:14,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:14,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash 406071093, now seen corresponding path program 1 times [2023-11-06 21:07:14,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:14,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728473728] [2023-11-06 21:07:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:14,179 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 [2023-11-06 21:07:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:14,180 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:14,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:14,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:07:14,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:14,370 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 21:07:14,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 21:07:14,493 INFO L351 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 16 treesize of output 13 [2023-11-06 21:07:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:14,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:14,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728473728] [2023-11-06 21:07:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728473728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:14,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:14,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113168032] [2023-11-06 21:07:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:14,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:07:14,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:07:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:14,518 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-06 21:07:14,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:14,687 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2023-11-06 21:07:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:07:14,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2023-11-06 21:07:14,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:14,689 INFO L225 Difference]: With dead ends: 44 [2023-11-06 21:07:14,689 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 21:07:14,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:07:14,690 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:14,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 87 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:14,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 21:07:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2023-11-06 21:07:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.4) internal successors, (42), 37 states have internal predecessors, (42), 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) [2023-11-06 21:07:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-11-06 21:07:14,694 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 17 [2023-11-06 21:07:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:14,694 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-11-06 21:07:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-06 21:07:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-11-06 21:07:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:07:14,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:14,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:14,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:14,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:14,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:14,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash 406071094, now seen corresponding path program 1 times [2023-11-06 21:07:14,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:14,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977100390] [2023-11-06 21:07:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:14,906 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 [2023-11-06 21:07:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:14,907 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:14,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:14,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:07:14,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:15,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:07:15,180 INFO L351 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 [2023-11-06 21:07:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:15,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:15,295 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977100390] [2023-11-06 21:07:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977100390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:15,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:15,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893734445] [2023-11-06 21:07:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:07:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:07:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:07:15,297 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-06 21:07:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:15,662 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2023-11-06 21:07:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:07:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2023-11-06 21:07:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:15,663 INFO L225 Difference]: With dead ends: 48 [2023-11-06 21:07:15,663 INFO L226 Difference]: Without dead ends: 48 [2023-11-06 21:07:15,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:07:15,664 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:15,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 94 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:07:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-06 21:07:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2023-11-06 21:07:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 33 states have internal predecessors, (36), 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) [2023-11-06 21:07:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-11-06 21:07:15,668 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 17 [2023-11-06 21:07:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:15,668 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-11-06 21:07:15,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-06 21:07:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-11-06 21:07:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:07:15,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:15,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:15,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:15,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:15,870 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:15,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 406070677, now seen corresponding path program 1 times [2023-11-06 21:07:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899712297] [2023-11-06 21:07:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:15,871 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 [2023-11-06 21:07:15,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:15,872 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:15,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (14)] Waiting until timeout for monitored process [2023-11-06 21:07:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:15,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:07:15,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:15,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:15,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:15,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899712297] [2023-11-06 21:07:15,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899712297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:15,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:15,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:15,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460764987] [2023-11-06 21:07:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:15,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:15,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:15,977 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-06 21:07:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:16,020 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2023-11-06 21:07:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:07:16,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2023-11-06 21:07:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:16,022 INFO L225 Difference]: With dead ends: 42 [2023-11-06 21:07:16,022 INFO L226 Difference]: Without dead ends: 42 [2023-11-06 21:07:16,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:16,023 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:16,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-06 21:07:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-11-06 21:07:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 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) [2023-11-06 21:07:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-11-06 21:07:16,028 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2023-11-06 21:07:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:16,028 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-11-06 21:07:16,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-06 21:07:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-11-06 21:07:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:07:16,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:16,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:16,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:16,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:16,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash 861631573, now seen corresponding path program 1 times [2023-11-06 21:07:16,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:16,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889218124] [2023-11-06 21:07:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:16,244 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 [2023-11-06 21:07:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:16,246 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:16,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (15)] Waiting until timeout for monitored process [2023-11-06 21:07:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:16,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:07:16,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:16,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:16,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:16,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889218124] [2023-11-06 21:07:16,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889218124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:16,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:16,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:16,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473636693] [2023-11-06 21:07:16,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:16,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:07:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:16,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:07:16,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:07:16,504 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-06 21:07:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:16,628 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-11-06 21:07:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:07:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2023-11-06 21:07:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:16,629 INFO L225 Difference]: With dead ends: 38 [2023-11-06 21:07:16,629 INFO L226 Difference]: Without dead ends: 38 [2023-11-06 21:07:16,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:07:16,630 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:16,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:16,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-06 21:07:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-06 21:07:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 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) [2023-11-06 21:07:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2023-11-06 21:07:16,633 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 18 [2023-11-06 21:07:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:16,633 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-11-06 21:07:16,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-06 21:07:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2023-11-06 21:07:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:07:16,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:16,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:16,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (15)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:16,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:16,835 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:16,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash 861631572, now seen corresponding path program 1 times [2023-11-06 21:07:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:16,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518136689] [2023-11-06 21:07:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:16,836 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 [2023-11-06 21:07:16,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:16,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:16,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (16)] Waiting until timeout for monitored process [2023-11-06 21:07:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:16,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:07:16,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:16,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:16,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:16,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518136689] [2023-11-06 21:07:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518136689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:16,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:16,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121888719] [2023-11-06 21:07:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:16,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:16,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:16,963 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-06 21:07:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:17,062 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2023-11-06 21:07:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:07:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2023-11-06 21:07:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:17,063 INFO L225 Difference]: With dead ends: 37 [2023-11-06 21:07:17,063 INFO L226 Difference]: Without dead ends: 37 [2023-11-06 21:07:17,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:17,065 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:17,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 58 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-06 21:07:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-11-06 21:07:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 33 states have internal predecessors, (36), 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) [2023-11-06 21:07:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-11-06 21:07:17,067 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2023-11-06 21:07:17,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:17,068 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-11-06 21:07:17,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-06 21:07:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-11-06 21:07:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 21:07:17,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:17,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:17,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (16)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:17,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:17,279 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:17,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash -607702474, now seen corresponding path program 1 times [2023-11-06 21:07:17,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404131725] [2023-11-06 21:07:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:17,280 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 [2023-11-06 21:07:17,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:17,281 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:17,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (17)] Waiting until timeout for monitored process [2023-11-06 21:07:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:17,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:07:17,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:17,513 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_probe1_6_~p~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_probe1_6_~p~0#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_probe1_6_~p~0#1.base| (_ bv0 1))))) is different from true [2023-11-06 21:07:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:17,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:17,558 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404131725] [2023-11-06 21:07:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404131725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:17,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:07:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427709919] [2023-11-06 21:07:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:17,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:07:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:17,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:07:17,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=32, Unknown=1, NotChecked=10, Total=56 [2023-11-06 21:07:17,560 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-06 21:07:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:17,770 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-11-06 21:07:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:07:17,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 19 [2023-11-06 21:07:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:17,771 INFO L225 Difference]: With dead ends: 39 [2023-11-06 21:07:17,771 INFO L226 Difference]: Without dead ends: 31 [2023-11-06 21:07:17,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2023-11-06 21:07:17,773 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:17,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2023-11-06 21:07:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-06 21:07:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-06 21:07:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 28 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) [2023-11-06 21:07:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2023-11-06 21:07:17,775 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2023-11-06 21:07:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:17,776 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2023-11-06 21:07:17,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-06 21:07:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2023-11-06 21:07:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 21:07:17,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:17,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:17,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (17)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:17,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:17,987 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:17,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash 940774974, now seen corresponding path program 1 times [2023-11-06 21:07:17,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:17,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309800163] [2023-11-06 21:07:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:17,988 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 [2023-11-06 21:07:17,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:17,989 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:17,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (18)] Waiting until timeout for monitored process [2023-11-06 21:07:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:18,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:07:18,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:18,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:07:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:18,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:18,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:18,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309800163] [2023-11-06 21:07:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309800163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:18,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:07:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324378146] [2023-11-06 21:07:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:18,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:07:18,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:07:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:07:18,281 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2023-11-06 21:07:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:18,502 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-11-06 21:07:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:07:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 19 [2023-11-06 21:07:18,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:18,503 INFO L225 Difference]: With dead ends: 30 [2023-11-06 21:07:18,503 INFO L226 Difference]: Without dead ends: 30 [2023-11-06 21:07:18,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:07:18,504 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:18,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 78 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-06 21:07:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-06 21:07:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 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) [2023-11-06 21:07:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2023-11-06 21:07:18,507 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 19 [2023-11-06 21:07:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:18,507 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2023-11-06 21:07:18,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2023-11-06 21:07:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2023-11-06 21:07:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 21:07:18,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:18,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:18,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (18)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:18,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:18,709 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:18,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash -900345610, now seen corresponding path program 1 times [2023-11-06 21:07:18,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:18,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113217173] [2023-11-06 21:07:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:18,710 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 [2023-11-06 21:07:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:18,711 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:18,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (19)] Waiting until timeout for monitored process [2023-11-06 21:07:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:18,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:07:18,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:18,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:18,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:18,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113217173] [2023-11-06 21:07:18,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113217173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:18,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:18,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:18,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796042238] [2023-11-06 21:07:18,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:18,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:18,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:18,799 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-11-06 21:07:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:18,816 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2023-11-06 21:07:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:18,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 20 [2023-11-06 21:07:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:18,817 INFO L225 Difference]: With dead ends: 29 [2023-11-06 21:07:18,817 INFO L226 Difference]: Without dead ends: 29 [2023-11-06 21:07:18,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:18,818 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:18,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:18,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-06 21:07:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-06 21:07:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 26 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) [2023-11-06 21:07:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2023-11-06 21:07:18,821 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 20 [2023-11-06 21:07:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:18,822 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2023-11-06 21:07:18,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-11-06 21:07:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2023-11-06 21:07:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 21:07:18,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:18,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:18,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (19)] Ended with exit code 0 [2023-11-06 21:07:19,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:19,036 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:19,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:19,037 INFO L85 PathProgramCache]: Analyzing trace with hash -900746796, now seen corresponding path program 1 times [2023-11-06 21:07:19,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:19,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184968470] [2023-11-06 21:07:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:19,037 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 [2023-11-06 21:07:19,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:19,038 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:19,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (20)] Waiting until timeout for monitored process [2023-11-06 21:07:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:19,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 21:07:19,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:19,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 21:07:19,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 21:07:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:19,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:19,553 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184968470] [2023-11-06 21:07:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184968470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:07:19,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837572970] [2023-11-06 21:07:19,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:07:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:07:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:07:19,555 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-06 21:07:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:19,838 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2023-11-06 21:07:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:07:19,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 20 [2023-11-06 21:07:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:19,840 INFO L225 Difference]: With dead ends: 28 [2023-11-06 21:07:19,840 INFO L226 Difference]: Without dead ends: 28 [2023-11-06 21:07:19,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:07:19,842 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:19,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-06 21:07:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-06 21:07:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 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) [2023-11-06 21:07:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2023-11-06 21:07:19,844 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 20 [2023-11-06 21:07:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:19,845 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2023-11-06 21:07:19,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-06 21:07:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2023-11-06 21:07:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 21:07:19,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:19,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:19,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (20)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:20,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:20,046 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:20,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2141620480, now seen corresponding path program 1 times [2023-11-06 21:07:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:20,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438991041] [2023-11-06 21:07:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:20,048 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 [2023-11-06 21:07:20,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:20,049 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:20,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (21)] Waiting until timeout for monitored process [2023-11-06 21:07:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:20,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:07:20,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:20,153 INFO L351 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 [2023-11-06 21:07:20,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 21:07:20,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 21:07:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:20,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:20,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438991041] [2023-11-06 21:07:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438991041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:20,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:07:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604128025] [2023-11-06 21:07:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:07:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:07:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:07:20,360 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-06 21:07:20,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:20,563 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2023-11-06 21:07:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:07:20,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 21 [2023-11-06 21:07:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:20,564 INFO L225 Difference]: With dead ends: 27 [2023-11-06 21:07:20,564 INFO L226 Difference]: Without dead ends: 27 [2023-11-06 21:07:20,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:07:20,565 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:20,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 70 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:20,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-06 21:07:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-06 21:07:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 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) [2023-11-06 21:07:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2023-11-06 21:07:20,570 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 21 [2023-11-06 21:07:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:20,570 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2023-11-06 21:07:20,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-06 21:07:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2023-11-06 21:07:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 21:07:20,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:20,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:20,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (21)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:20,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:20,776 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:20,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:20,776 INFO L85 PathProgramCache]: Analyzing trace with hash 807949254, now seen corresponding path program 1 times [2023-11-06 21:07:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:20,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558423268] [2023-11-06 21:07:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:20,777 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 [2023-11-06 21:07:20,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:20,778 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:20,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (22)] Waiting until timeout for monitored process [2023-11-06 21:07:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:20,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 21:07:20,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:21,012 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 21:07:21,013 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 21:07:21,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 21:07:21,390 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 21:07:21,461 INFO L351 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 16 treesize of output 13 [2023-11-06 21:07:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:21,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:21,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:21,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558423268] [2023-11-06 21:07:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558423268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:21,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:21,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:07:21,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137096237] [2023-11-06 21:07:21,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:21,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:07:21,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:07:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:07:21,478 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2023-11-06 21:07:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:21,891 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2023-11-06 21:07:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:07:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 23 [2023-11-06 21:07:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:21,893 INFO L225 Difference]: With dead ends: 26 [2023-11-06 21:07:21,893 INFO L226 Difference]: Without dead ends: 26 [2023-11-06 21:07:21,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:07:21,894 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:21,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 71 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:07:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-06 21:07:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-06 21:07:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.0) internal successors, (23), 23 states have internal predecessors, (23), 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) [2023-11-06 21:07:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2023-11-06 21:07:21,897 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 23 [2023-11-06 21:07:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:21,897 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2023-11-06 21:07:21,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2023-11-06 21:07:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2023-11-06 21:07:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 21:07:21,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:21,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:21,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (22)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:22,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:22,108 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-06 21:07:22,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash -949846393, now seen corresponding path program 1 times [2023-11-06 21:07:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926319590] [2023-11-06 21:07:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:22,109 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 [2023-11-06 21:07:22,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:22,110 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:22,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (23)] Waiting until timeout for monitored process [2023-11-06 21:07:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:22,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 21:07:22,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:22,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 21:07:22,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-06 21:07:22,642 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10|)))) is different from true [2023-11-06 21:07:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:22,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:22,664 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926319590] [2023-11-06 21:07:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926319590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:22,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:07:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595982069] [2023-11-06 21:07:22,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:22,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:07:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:07:22,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=74, Unknown=1, NotChecked=16, Total=110 [2023-11-06 21:07:22,666 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2023-11-06 21:07:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:23,193 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2023-11-06 21:07:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:07:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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 25 [2023-11-06 21:07:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:23,195 INFO L225 Difference]: With dead ends: 25 [2023-11-06 21:07:23,195 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:07:23,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240 [2023-11-06 21:07:23,196 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:23,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 76 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2023-11-06 21:07:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:07:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:07:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:07:23,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2023-11-06 21:07:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:23,198 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:07:23,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2023-11-06 21:07:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:07:23,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:07:23,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2023-11-06 21:07:23,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-06 21:07:23,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (10 of 13 remaining) [2023-11-06 21:07:23,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2023-11-06 21:07:23,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (5 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-06 21:07:23,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-06 21:07:23,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 (23)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:23,406 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:23,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:07:23,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:07:23 BoogieIcfgContainer [2023-11-06 21:07:23,412 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:07:23,413 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:07:23,413 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:07:23,413 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:07:23,413 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:08" (3/4) ... [2023-11-06 21:07:23,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:07:23,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2023-11-06 21:07:23,427 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-06 21:07:23,427 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:07:23,428 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-06 21:07:23,500 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 21:07:23,501 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 21:07:23,501 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:07:23,502 INFO L158 Benchmark]: Toolchain (without parser) took 16592.40ms. Allocated memory was 77.6MB in the beginning and 125.8MB in the end (delta: 48.2MB). Free memory was 51.9MB in the beginning and 59.0MB in the end (delta: -7.0MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2023-11-06 21:07:23,502 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:23,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1020.35ms. Allocated memory was 77.6MB in the beginning and 104.9MB in the end (delta: 27.3MB). Free memory was 51.7MB in the beginning and 67.3MB in the end (delta: -15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 21:07:23,503 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.94ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:23,504 INFO L158 Benchmark]: Boogie Preprocessor took 35.09ms. Allocated memory is still 104.9MB. Free memory was 64.8MB in the beginning and 63.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:23,505 INFO L158 Benchmark]: RCFGBuilder took 596.80ms. Allocated memory is still 104.9MB. Free memory was 63.1MB in the beginning and 78.4MB in the end (delta: -15.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2023-11-06 21:07:23,505 INFO L158 Benchmark]: TraceAbstraction took 14778.57ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 77.8MB in the beginning and 63.0MB in the end (delta: 14.8MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:23,506 INFO L158 Benchmark]: Witness Printer took 88.76ms. Allocated memory is still 125.8MB. Free memory was 63.0MB in the beginning and 59.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:07:23,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1020.35ms. Allocated memory was 77.6MB in the beginning and 104.9MB in the end (delta: 27.3MB). Free memory was 51.7MB in the beginning and 67.3MB in the end (delta: -15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.94ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.09ms. Allocated memory is still 104.9MB. Free memory was 64.8MB in the beginning and 63.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 596.80ms. Allocated memory is still 104.9MB. Free memory was 63.1MB in the beginning and 78.4MB in the end (delta: -15.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14778.57ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 77.8MB in the beginning and 63.0MB in the end (delta: 14.8MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Witness Printer took 88.76ms. Allocated memory is still 125.8MB. Free memory was 63.0MB in the beginning and 59.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 791]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 14.7s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 521 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 521 mSDsluCounter, 2177 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 117 IncrementalHoareTripleChecker+Unchecked, 1500 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1129 IncrementalHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 677 mSDtfsCounter, 1129 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 150, 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, 22 MinimizatonAttempts, 82 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 340 ConstructedInterpolants, 13 QuantifiedInterpolants, 2823 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1379 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:07:23,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0347f7e1-3ba9-4935-812d-f87104031cbc/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE