./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:52:53,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:52:53,847 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:52:53,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:52:53,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:52:53,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:52:53,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:52:53,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:52:53,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:52:53,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:52:53,882 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:52:53,882 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:52:53,883 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:52:53,883 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:52:53,884 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:52:53,884 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:52:53,885 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:52:53,886 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:52:53,886 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:52:53,887 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:52:53,887 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:52:53,896 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:52:53,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:52:53,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:52:53,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:52:53,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:52:53,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:52:53,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:52:53,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:52:53,900 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:52:53,901 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:52:53,901 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:52:53,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:52:53,902 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:52:53,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:52:53,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:52:53,903 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:52:53,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:52:53,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:52:53,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:52:53,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:52:53,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:52:53,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:52:53,910 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:52:53,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:52:53,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:52:53,911 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:52:53,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:52:53,911 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_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-11-21 19:52:54,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:52:54,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:52:54,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:52:54,216 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:52:54,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:52:54,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 19:52:57,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:52:57,640 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:52:57,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 19:52:57,682 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data/a58dc2df7/e831c62fe35b43339a97396e7a5708a3/FLAG4cfd47550 [2023-11-21 19:52:57,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data/a58dc2df7/e831c62fe35b43339a97396e7a5708a3 [2023-11-21 19:52:57,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:52:57,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:52:57,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:52:57,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:52:57,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:52:57,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:52:57" (1/1) ... [2023-11-21 19:52:57,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eba3e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:52:57, skipping insertion in model container [2023-11-21 19:52:57,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:52:57" (1/1) ... [2023-11-21 19:52:57,823 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:52:58,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:52:58,569 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) [2023-11-21 19:52:58,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46f31c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:52:58, skipping insertion in model container [2023-11-21 19:52:58,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:52:58,575 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 19:52:58,577 INFO L158 Benchmark]: Toolchain (without parser) took 863.62ms. Allocated memory is still 138.4MB. Free memory was 90.4MB in the beginning and 69.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 19:52:58,578 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:52:58,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 857.81ms. Allocated memory is still 138.4MB. Free memory was 89.8MB in the beginning and 70.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:52:58,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 857.81ms. Allocated memory is still 138.4MB. Free memory was 89.8MB in the beginning and 70.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:53:01,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:53:01,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 19:53:01,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:53:01,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:53:01,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:53:01,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:53:01,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:53:01,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:53:01,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:53:01,205 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:53:01,205 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:53:01,206 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:53:01,210 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:53:01,211 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:53:01,211 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:53:01,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:53:01,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:53:01,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:53:01,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:53:01,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:53:01,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:53:01,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:53:01,217 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:53:01,217 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:53:01,218 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:53:01,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:53:01,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:53:01,219 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:53:01,220 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:53:01,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:53:01,221 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:53:01,222 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:53:01,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:53:01,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:53:01,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:53:01,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:53:01,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:53:01,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:53:01,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:53:01,225 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:53:01,226 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:53:01,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:53:01,226 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:53:01,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:53:01,227 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_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-11-21 19:53:01,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:53:01,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:53:01,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:53:01,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:53:01,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:53:01,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 19:53:04,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:53:05,210 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:53:05,210 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 19:53:05,243 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data/69a121f6c/b8be447d175049168b10b198d620cc10/FLAG32166c64d [2023-11-21 19:53:05,260 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/data/69a121f6c/b8be447d175049168b10b198d620cc10 [2023-11-21 19:53:05,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:53:05,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:53:05,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:53:05,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:53:05,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:53:05,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:53:05" (1/1) ... [2023-11-21 19:53:05,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2574407c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:05, skipping insertion in model container [2023-11-21 19:53:05,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:53:05" (1/1) ... [2023-11-21 19:53:05,368 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:53:06,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:53:06,064 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 19:53:06,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:53:06,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:53:06,177 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:53:06,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:53:06,382 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:53:06,390 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:53:06,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06 WrapperNode [2023-11-21 19:53:06,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:53:06,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:53:06,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:53:06,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:53:06,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,544 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1060 [2023-11-21 19:53:06,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:53:06,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:53:06,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:53:06,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:53:06,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:53:06,698 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:53:06,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:53:06,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:53:06,699 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (1/1) ... [2023-11-21 19:53:06,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:53:06,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:53:06,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:53:06,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:53:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-21 19:53:06,774 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-21 19:53:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 19:53:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:53:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 19:53:06,775 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 19:53:06,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:53:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 19:53:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:53:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:53:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 19:53:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:53:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:53:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:53:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:53:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:53:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:53:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:53:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:53:07,090 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:53:07,092 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:53:07,146 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 19:53:12,144 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:53:12,466 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:53:12,467 INFO L308 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-21 19:53:12,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:53:12 BoogieIcfgContainer [2023-11-21 19:53:12,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:53:12,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:53:12,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:53:12,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:53:12,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:53:05" (1/3) ... [2023-11-21 19:53:12,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dd905b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:53:12, skipping insertion in model container [2023-11-21 19:53:12,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:06" (2/3) ... [2023-11-21 19:53:12,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dd905b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:53:12, skipping insertion in model container [2023-11-21 19:53:12,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:53:12" (3/3) ... [2023-11-21 19:53:12,479 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2023-11-21 19:53:12,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:53:12,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 535 error locations. [2023-11-21 19:53:12,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:53:12,568 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;@66dfd3db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:53:12,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 535 error locations. [2023-11-21 19:53:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 979 states, 433 states have (on average 2.5173210161662816) internal successors, (1090), 972 states have internal predecessors, (1090), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-21 19:53:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:53:12,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:12,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:53:12,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:12,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash 55202, now seen corresponding path program 1 times [2023-11-21 19:53:12,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:12,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352726595] [2023-11-21 19:53:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:12,602 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 [2023-11-21 19:53:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:12,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:12,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:12,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:53:12,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:12,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:53:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:12,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:12,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:12,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352726595] [2023-11-21 19:53:12,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352726595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:12,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:12,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:53:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805119039] [2023-11-21 19:53:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:12,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:53:12,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:12,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:53:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:12,904 INFO L87 Difference]: Start difference. First operand has 979 states, 433 states have (on average 2.5173210161662816) internal successors, (1090), 972 states have internal predecessors, (1090), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:15,296 INFO L93 Difference]: Finished difference Result 1130 states and 1206 transitions. [2023-11-21 19:53:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:53:15,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 19:53:15,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:15,321 INFO L225 Difference]: With dead ends: 1130 [2023-11-21 19:53:15,321 INFO L226 Difference]: Without dead ends: 1129 [2023-11-21 19:53:15,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:15,326 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 901 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:15,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 664 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 19:53:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2023-11-21 19:53:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 965. [2023-11-21 19:53:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 436 states have (on average 2.3279816513761467) internal successors, (1015), 958 states have internal predecessors, (1015), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:53:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1033 transitions. [2023-11-21 19:53:15,446 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1033 transitions. Word has length 2 [2023-11-21 19:53:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:15,447 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1033 transitions. [2023-11-21 19:53:15,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:15,447 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1033 transitions. [2023-11-21 19:53:15,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:53:15,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:15,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:53:15,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-21 19:53:15,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:15,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:15,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash 55203, now seen corresponding path program 1 times [2023-11-21 19:53:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:15,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031244963] [2023-11-21 19:53:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:15,653 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 [2023-11-21 19:53:15,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:15,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:15,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:15,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:53:15,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:15,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:53:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:15,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:15,812 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:15,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031244963] [2023-11-21 19:53:15,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031244963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:15,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:15,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:53:15,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934332980] [2023-11-21 19:53:15,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:15,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:53:15,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:53:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:15,822 INFO L87 Difference]: Start difference. First operand 965 states and 1033 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:19,468 INFO L93 Difference]: Finished difference Result 1344 states and 1455 transitions. [2023-11-21 19:53:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:53:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 19:53:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:19,476 INFO L225 Difference]: With dead ends: 1344 [2023-11-21 19:53:19,476 INFO L226 Difference]: Without dead ends: 1344 [2023-11-21 19:53:19,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:19,478 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 411 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:19,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1255 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-21 19:53:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-11-21 19:53:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1076. [2023-11-21 19:53:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 543 states have (on average 2.268876611418048) internal successors, (1232), 1069 states have internal predecessors, (1232), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1260 transitions. [2023-11-21 19:53:19,521 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1260 transitions. Word has length 2 [2023-11-21 19:53:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:19,522 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1260 transitions. [2023-11-21 19:53:19,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1260 transitions. [2023-11-21 19:53:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:53:19,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:19,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:53:19,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-21 19:53:19,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:19,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:19,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1644576548, now seen corresponding path program 1 times [2023-11-21 19:53:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:19,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635148042] [2023-11-21 19:53:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:19,727 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 [2023-11-21 19:53:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:19,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:19,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:19,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:53:19,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:19,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:53:19,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:53:20,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:53:20,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 19:53:20,063 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 19:53:20,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-21 19:53:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:20,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:20,080 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:20,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635148042] [2023-11-21 19:53:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635148042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:20,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:20,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:53:20,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521498719] [2023-11-21 19:53:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:20,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:53:20,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:53:20,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:20,086 INFO L87 Difference]: Start difference. First operand 1076 states and 1260 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:23,704 INFO L93 Difference]: Finished difference Result 1229 states and 1421 transitions. [2023-11-21 19:53:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:53:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 19:53:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:23,712 INFO L225 Difference]: With dead ends: 1229 [2023-11-21 19:53:23,712 INFO L226 Difference]: Without dead ends: 1229 [2023-11-21 19:53:23,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:23,713 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1153 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:23,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 342 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-21 19:53:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-11-21 19:53:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 954. [2023-11-21 19:53:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 436 states have (on average 2.30045871559633) internal successors, (1003), 947 states have internal predecessors, (1003), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:53:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1021 transitions. [2023-11-21 19:53:23,745 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1021 transitions. Word has length 5 [2023-11-21 19:53:23,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:23,745 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1021 transitions. [2023-11-21 19:53:23,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:23,748 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1021 transitions. [2023-11-21 19:53:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:53:23,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:23,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 19:53:23,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:23,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:23,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:23,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash -557734581, now seen corresponding path program 1 times [2023-11-21 19:53:23,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:23,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649651820] [2023-11-21 19:53:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:23,954 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 [2023-11-21 19:53:23,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:23,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:23,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:24,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:53:24,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:24,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:53:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:24,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:24,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:24,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649651820] [2023-11-21 19:53:24,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649651820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:24,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:24,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:53:24,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826045757] [2023-11-21 19:53:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:24,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:53:24,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:24,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:53:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:24,146 INFO L87 Difference]: Start difference. First operand 954 states and 1021 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:26,338 INFO L93 Difference]: Finished difference Result 1106 states and 1205 transitions. [2023-11-21 19:53:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:53:26,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 19:53:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:26,347 INFO L225 Difference]: With dead ends: 1106 [2023-11-21 19:53:26,347 INFO L226 Difference]: Without dead ends: 1106 [2023-11-21 19:53:26,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:26,351 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 729 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:26,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 967 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 19:53:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-11-21 19:53:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 907. [2023-11-21 19:53:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 436 states have (on average 2.1926605504587156) internal successors, (956), 900 states have internal predecessors, (956), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:53:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 974 transitions. [2023-11-21 19:53:26,383 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 974 transitions. Word has length 6 [2023-11-21 19:53:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:26,384 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 974 transitions. [2023-11-21 19:53:26,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 974 transitions. [2023-11-21 19:53:26,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:53:26,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:26,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 19:53:26,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-21 19:53:26,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:26,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:26,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash -557734580, now seen corresponding path program 1 times [2023-11-21 19:53:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:26,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372776055] [2023-11-21 19:53:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:26,589 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 [2023-11-21 19:53:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:26,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:26,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:26,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:53:26,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:26,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:53:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:26,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:26,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372776055] [2023-11-21 19:53:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372776055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:53:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874788841] [2023-11-21 19:53:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:53:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:53:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:26,782 INFO L87 Difference]: Start difference. First operand 907 states and 974 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:29,789 INFO L93 Difference]: Finished difference Result 1164 states and 1266 transitions. [2023-11-21 19:53:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:53:29,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 19:53:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:29,798 INFO L225 Difference]: With dead ends: 1164 [2023-11-21 19:53:29,798 INFO L226 Difference]: Without dead ends: 1164 [2023-11-21 19:53:29,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:29,799 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 448 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:29,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1249 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-21 19:53:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-21 19:53:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 920. [2023-11-21 19:53:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 459 states have (on average 2.185185185185185) internal successors, (1003), 913 states have internal predecessors, (1003), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:53:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1021 transitions. [2023-11-21 19:53:29,826 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1021 transitions. Word has length 6 [2023-11-21 19:53:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:29,826 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1021 transitions. [2023-11-21 19:53:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1021 transitions. [2023-11-21 19:53:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:53:29,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:29,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:53:29,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 19:53:30,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:30,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:30,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash -864044681, now seen corresponding path program 1 times [2023-11-21 19:53:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:30,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177562160] [2023-11-21 19:53:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:30,031 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 [2023-11-21 19:53:30,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:30,033 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:30,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:30,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:53:30,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:30,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:30,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177562160] [2023-11-21 19:53:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177562160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:30,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:30,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:53:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138591774] [2023-11-21 19:53:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:30,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:53:30,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:53:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:30,279 INFO L87 Difference]: Start difference. First operand 920 states and 1021 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:31,648 INFO L93 Difference]: Finished difference Result 1347 states and 1494 transitions. [2023-11-21 19:53:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:53:31,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-21 19:53:31,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:31,657 INFO L225 Difference]: With dead ends: 1347 [2023-11-21 19:53:31,657 INFO L226 Difference]: Without dead ends: 1347 [2023-11-21 19:53:31,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:31,658 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 512 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:31,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1601 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 19:53:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2023-11-21 19:53:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1071. [2023-11-21 19:53:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 605 states have (on average 2.1107438016528928) internal successors, (1277), 1064 states have internal predecessors, (1277), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1305 transitions. [2023-11-21 19:53:31,688 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1305 transitions. Word has length 10 [2023-11-21 19:53:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:31,689 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1305 transitions. [2023-11-21 19:53:31,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1305 transitions. [2023-11-21 19:53:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:53:31,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:31,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:53:31,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:31,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr533ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:31,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1418006396, now seen corresponding path program 1 times [2023-11-21 19:53:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801152840] [2023-11-21 19:53:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:31,895 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 [2023-11-21 19:53:31,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:31,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:31,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:32,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:53:32,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:32,118 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 19:53:32,119 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 19:53:32,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 19:53:32,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-21 19:53:32,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 19:53:32,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-21 19:53:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:32,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:32,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801152840] [2023-11-21 19:53:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801152840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:32,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:32,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:53:32,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022159124] [2023-11-21 19:53:32,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:32,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:53:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:53:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:32,238 INFO L87 Difference]: Start difference. First operand 1071 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 19:53:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:34,305 INFO L93 Difference]: Finished difference Result 1419 states and 1706 transitions. [2023-11-21 19:53:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:53:34,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 19:53:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:34,312 INFO L225 Difference]: With dead ends: 1419 [2023-11-21 19:53:34,312 INFO L226 Difference]: Without dead ends: 1419 [2023-11-21 19:53:34,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:53:34,314 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 355 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:34,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2429 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-21 19:53:34,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-21 19:53:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1070. [2023-11-21 19:53:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 604 states have (on average 2.1109271523178808) internal successors, (1275), 1063 states have internal predecessors, (1275), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1303 transitions. [2023-11-21 19:53:34,343 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1303 transitions. Word has length 12 [2023-11-21 19:53:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:34,343 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1303 transitions. [2023-11-21 19:53:34,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 19:53:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1303 transitions. [2023-11-21 19:53:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 19:53:34,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:34,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:53:34,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:34,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:34,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:34,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1956189507, now seen corresponding path program 1 times [2023-11-21 19:53:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798382610] [2023-11-21 19:53:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:34,551 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 [2023-11-21 19:53:34,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:34,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:34,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:34,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:53:34,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:34,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:34,773 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798382610] [2023-11-21 19:53:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798382610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:34,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:34,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:53:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337204522] [2023-11-21 19:53:34,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:53:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:53:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:34,775 INFO L87 Difference]: Start difference. First operand 1070 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:35,713 INFO L93 Difference]: Finished difference Result 1016 states and 1223 transitions. [2023-11-21 19:53:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:53:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-21 19:53:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:35,720 INFO L225 Difference]: With dead ends: 1016 [2023-11-21 19:53:35,720 INFO L226 Difference]: Without dead ends: 1016 [2023-11-21 19:53:35,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:53:35,722 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 69 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:35,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1543 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 19:53:35,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-11-21 19:53:35,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2023-11-21 19:53:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 574 states have (on average 2.081881533101045) internal successors, (1195), 1009 states have internal predecessors, (1195), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1223 transitions. [2023-11-21 19:53:35,746 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1223 transitions. Word has length 14 [2023-11-21 19:53:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:35,747 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1223 transitions. [2023-11-21 19:53:35,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1223 transitions. [2023-11-21 19:53:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:53:35,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:35,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:53:35,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-21 19:53:35,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:35,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:35,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash 514051754, now seen corresponding path program 1 times [2023-11-21 19:53:35,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:35,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455633133] [2023-11-21 19:53:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:35,953 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 [2023-11-21 19:53:35,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:35,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:35,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:36,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:53:36,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:36,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:36,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:36,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455633133] [2023-11-21 19:53:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455633133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:36,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:36,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:53:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217065789] [2023-11-21 19:53:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:36,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:53:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:36,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:53:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:36,195 INFO L87 Difference]: Start difference. First operand 1016 states and 1223 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:37,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:37,510 INFO L93 Difference]: Finished difference Result 1002 states and 1181 transitions. [2023-11-21 19:53:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:53:37,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 19:53:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:37,518 INFO L225 Difference]: With dead ends: 1002 [2023-11-21 19:53:37,519 INFO L226 Difference]: Without dead ends: 1002 [2023-11-21 19:53:37,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:53:37,520 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 58 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2271 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 19:53:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-11-21 19:53:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1000. [2023-11-21 19:53:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 572 states have (on average 2.012237762237762) internal successors, (1151), 993 states have internal predecessors, (1151), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1179 transitions. [2023-11-21 19:53:37,545 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1179 transitions. Word has length 15 [2023-11-21 19:53:37,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:37,546 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1179 transitions. [2023-11-21 19:53:37,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1179 transitions. [2023-11-21 19:53:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:53:37,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:37,547 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, 1, 1, 1, 1] [2023-11-21 19:53:37,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:37,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:37,751 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:37,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash -170410632, now seen corresponding path program 1 times [2023-11-21 19:53:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:37,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579495527] [2023-11-21 19:53:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:37,753 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 [2023-11-21 19:53:37,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:37,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:37,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:37,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:53:37,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:37,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:53:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:38,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:38,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579495527] [2023-11-21 19:53:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579495527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:53:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891948052] [2023-11-21 19:53:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:53:38,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:53:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:38,086 INFO L87 Difference]: Start difference. First operand 1000 states and 1179 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:41,097 INFO L93 Difference]: Finished difference Result 1276 states and 1557 transitions. [2023-11-21 19:53:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:53:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-21 19:53:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:41,107 INFO L225 Difference]: With dead ends: 1276 [2023-11-21 19:53:41,108 INFO L226 Difference]: Without dead ends: 1276 [2023-11-21 19:53:41,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:53:41,109 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 662 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:41,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1086 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-21 19:53:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-11-21 19:53:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 996. [2023-11-21 19:53:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 572 states have (on average 1.9982517482517483) internal successors, (1143), 989 states have internal predecessors, (1143), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1171 transitions. [2023-11-21 19:53:41,136 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1171 transitions. Word has length 29 [2023-11-21 19:53:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:41,136 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1171 transitions. [2023-11-21 19:53:41,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1171 transitions. [2023-11-21 19:53:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:53:41,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:41,138 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, 1, 1, 1, 1] [2023-11-21 19:53:41,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-21 19:53:41,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:41,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:41,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash -170410631, now seen corresponding path program 1 times [2023-11-21 19:53:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244366912] [2023-11-21 19:53:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:41,348 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 [2023-11-21 19:53:41,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:41,349 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:41,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:41,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:53:41,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:41,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:53:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:41,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:41,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244366912] [2023-11-21 19:53:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244366912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:41,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:53:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972569259] [2023-11-21 19:53:41,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:41,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:53:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:53:41,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:41,783 INFO L87 Difference]: Start difference. First operand 996 states and 1171 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:46,028 INFO L93 Difference]: Finished difference Result 1317 states and 1563 transitions. [2023-11-21 19:53:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:53:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-21 19:53:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:46,036 INFO L225 Difference]: With dead ends: 1317 [2023-11-21 19:53:46,036 INFO L226 Difference]: Without dead ends: 1317 [2023-11-21 19:53:46,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:53:46,037 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 383 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:46,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1820 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-21 19:53:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2023-11-21 19:53:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 992. [2023-11-21 19:53:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 572 states have (on average 1.9842657342657342) internal successors, (1135), 985 states have internal predecessors, (1135), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1163 transitions. [2023-11-21 19:53:46,068 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1163 transitions. Word has length 29 [2023-11-21 19:53:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:46,069 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1163 transitions. [2023-11-21 19:53:46,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:53:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1163 transitions. [2023-11-21 19:53:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 19:53:46,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:46,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:53:46,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:46,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:46,275 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:46,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:46,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1802927874, now seen corresponding path program 1 times [2023-11-21 19:53:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:46,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934075429] [2023-11-21 19:53:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:46,276 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 [2023-11-21 19:53:46,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:46,278 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:46,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:46,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:53:46,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:46,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:46,625 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934075429] [2023-11-21 19:53:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934075429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:53:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995199273] [2023-11-21 19:53:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:46,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:53:46,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:46,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:53:46,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:46,627 INFO L87 Difference]: Start difference. First operand 992 states and 1163 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-11-21 19:53:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:53:47,895 INFO L93 Difference]: Finished difference Result 980 states and 1143 transitions. [2023-11-21 19:53:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:53:47,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-21 19:53:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:53:47,903 INFO L225 Difference]: With dead ends: 980 [2023-11-21 19:53:47,903 INFO L226 Difference]: Without dead ends: 980 [2023-11-21 19:53:47,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:53:47,904 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 23 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:53:47,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2257 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 19:53:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-11-21 19:53:47,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2023-11-21 19:53:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 560 states have (on average 1.9910714285714286) internal successors, (1115), 973 states have internal predecessors, (1115), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:53:47,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1143 transitions. [2023-11-21 19:53:47,926 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1143 transitions. Word has length 48 [2023-11-21 19:53:47,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:53:47,926 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1143 transitions. [2023-11-21 19:53:47,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-11-21 19:53:47,927 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1143 transitions. [2023-11-21 19:53:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 19:53:47,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:53:47,928 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, 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, 1, 1] [2023-11-21 19:53:47,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:48,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:53:48,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:53:48,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:53:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash 659605309, now seen corresponding path program 1 times [2023-11-21 19:53:48,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:53:48,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254589591] [2023-11-21 19:53:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:53:48,135 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 [2023-11-21 19:53:48,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:53:48,137 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:53:48,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d63a8d3-1da2-4af7-b619-5a8c0a6b4928/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:53:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:53:48,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:53:48,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:53:48,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:53:48,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:53:49,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:53:49,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 19:53:49,226 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 19:53:49,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-21 19:53:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:53:49,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:53:49,244 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:53:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254589591] [2023-11-21 19:53:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254589591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:53:49,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:53:49,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:53:49,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299678200] [2023-11-21 19:53:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:53:49,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:53:49,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:53:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:53:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:53:49,247 INFO L87 Difference]: Start difference. First operand 980 states and 1143 transitions. Second operand has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 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)