./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:57:18,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:57:18,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:57:18,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:57:18,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:57:18,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:57:18,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:57:18,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:57:18,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:57:18,199 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:57:18,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:57:18,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:57:18,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:57:18,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:57:18,202 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:57:18,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:57:18,203 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:57:18,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:57:18,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:57:18,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:57:18,205 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:57:18,208 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:57:18,208 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:57:18,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:57:18,209 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:57:18,209 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:57:18,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:57:18,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:57:18,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:57:18,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:57:18,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:57:18,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:57:18,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:57:18,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:57:18,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:57:18,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:57:18,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:57:18,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:57:18,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:57:18,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:57:18,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:57:18,216 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2023-11-29 00:57:18,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:57:18,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:57:18,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:57:18,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:57:18,489 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:57:18,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-29 00:57:21,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:57:21,482 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:57:21,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-29 00:57:21,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data/2eef69e16/656d00d7f73c46f19a193ad04540a5f6/FLAG9e3436ca5 [2023-11-29 00:57:21,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data/2eef69e16/656d00d7f73c46f19a193ad04540a5f6 [2023-11-29 00:57:21,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:57:21,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:57:21,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:21,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:57:21,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:57:21,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:21" (1/1) ... [2023-11-29 00:57:21,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f183852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:21, skipping insertion in model container [2023-11-29 00:57:21,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:21" (1/1) ... [2023-11-29 00:57:21,599 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:57:22,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:22,192 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) [2023-11-29 00:57:22,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ebc516f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:22, skipping insertion in model container [2023-11-29 00:57:22,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:22,193 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 00:57:22,195 INFO L158 Benchmark]: Toolchain (without parser) took 673.73ms. Allocated memory is still 190.8MB. Free memory was 150.4MB in the beginning and 137.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:57:22,195 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:57:22,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 671.47ms. Allocated memory is still 190.8MB. Free memory was 150.4MB in the beginning and 137.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:57:22,197 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 671.47ms. Allocated memory is still 190.8MB. Free memory was 150.4MB in the beginning and 137.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:57:23,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:57:24,016 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:57:24,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:57:24,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:57:24,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:57:24,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:57:24,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:57:24,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:57:24,048 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:57:24,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:57:24,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:57:24,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:57:24,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:57:24,051 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:57:24,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:57:24,053 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:57:24,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:57:24,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:57:24,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:57:24,054 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:57:24,055 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:57:24,055 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:57:24,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:57:24,056 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:57:24,057 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:57:24,057 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:57:24,057 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:57:24,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:57:24,058 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:57:24,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:57:24,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:57:24,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:57:24,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:57:24,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:57:24,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:57:24,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:57:24,060 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:57:24,061 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:57:24,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:57:24,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:57:24,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:57:24,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:57:24,062 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:57:24,062 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2023-11-29 00:57:24,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:57:24,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:57:24,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:57:24,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:57:24,399 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:57:24,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-29 00:57:27,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:57:27,487 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:57:27,488 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-29 00:57:27,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data/6e569791e/3cd6367182364264820e2a4c3d253479/FLAGc321cb854 [2023-11-29 00:57:27,520 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/data/6e569791e/3cd6367182364264820e2a4c3d253479 [2023-11-29 00:57:27,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:57:27,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:57:27,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:27,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:57:27,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:57:27,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:27" (1/1) ... [2023-11-29 00:57:27,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553924de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:27, skipping insertion in model container [2023-11-29 00:57:27,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:27" (1/1) ... [2023-11-29 00:57:27,595 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:57:28,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:28,262 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 00:57:28,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:57:28,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:28,429 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:57:28,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:28,577 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:57:28,583 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:57:28,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28 WrapperNode [2023-11-29 00:57:28,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:28,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:57:28,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:57:28,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:57:28,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,716 INFO L138 Inliner]: procedures = 180, calls = 525, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2203 [2023-11-29 00:57:28,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:57:28,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:57:28,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:57:28,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:57:28,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,883 INFO L175 MemorySlicer]: Split 490 memory accesses to 5 slices as follows [2, 106, 372, 5, 5]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 88 writes are split as follows [0, 4, 82, 1, 1]. [2023-11-29 00:57:28,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:28,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:29,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:57:29,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:57:29,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:57:29,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:57:29,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (1/1) ... [2023-11-29 00:57:29,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:57:29,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:29,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:57:29,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:57:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 00:57:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 00:57:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 00:57:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 00:57:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-29 00:57:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-29 00:57:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-29 00:57:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 00:57:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 00:57:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 00:57:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 00:57:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 00:57:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:57:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:57:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 00:57:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 00:57:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 00:57:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 00:57:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-29 00:57:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 00:57:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 00:57:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 00:57:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 00:57:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-29 00:57:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:57:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:57:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:57:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:57:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 00:57:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 00:57:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 00:57:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:57:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 00:57:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 00:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 00:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 00:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 00:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 00:57:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:57:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:57:29,359 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:57:29,362 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:57:29,420 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 00:57:29,444 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 00:57:29,468 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 00:57:29,488 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 00:57:29,506 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 00:57:37,511 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:57:37,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:57:37,808 INFO L309 CfgBuilder]: Removed 151 assume(true) statements. [2023-11-29 00:57:37,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:57:37 BoogieIcfgContainer [2023-11-29 00:57:37,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:57:37,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:57:37,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:57:37,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:57:37,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:57:27" (1/3) ... [2023-11-29 00:57:37,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c005799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:57:37, skipping insertion in model container [2023-11-29 00:57:37,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:28" (2/3) ... [2023-11-29 00:57:37,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c005799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:57:37, skipping insertion in model container [2023-11-29 00:57:37,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:57:37" (3/3) ... [2023-11-29 00:57:37,817 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2023-11-29 00:57:37,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:57:37,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2023-11-29 00:57:37,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:57:37,916 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=PETRI_NET, 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;@ef57b7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:57:37,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2023-11-29 00:57:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 1873 states, 871 states have (on average 2.4615384615384617) internal successors, (2144), 1859 states have internal predecessors, (2144), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 00:57:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 00:57:37,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:37,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 00:57:37,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:57:37,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash 111212, now seen corresponding path program 1 times [2023-11-29 00:57:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:57:37,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350494442] [2023-11-29 00:57:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:37,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:57:37,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:57:37,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:57:37,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:57:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:38,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:57:38,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:38,259 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 [2023-11-29 00:57:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:38,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:38,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:57:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350494442] [2023-11-29 00:57:38,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350494442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:38,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:38,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:57:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476519063] [2023-11-29 00:57:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:38,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:57:38,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:57:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:57:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:57:38,313 INFO L87 Difference]: Start difference. First operand has 1873 states, 871 states have (on average 2.4615384615384617) internal successors, (2144), 1859 states have internal predecessors, (2144), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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) [2023-11-29 00:57:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:42,095 INFO L93 Difference]: Finished difference Result 2324 states and 2487 transitions. [2023-11-29 00:57:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:57:42,097 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 [2023-11-29 00:57:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:42,122 INFO L225 Difference]: With dead ends: 2324 [2023-11-29 00:57:42,123 INFO L226 Difference]: Without dead ends: 2323 [2023-11-29 00:57:42,124 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 [2023-11-29 00:57:42,127 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 1779 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:42,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 1374 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 00:57:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2023-11-29 00:57:42,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1986. [2023-11-29 00:57:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1008 states have (on average 2.257936507936508) internal successors, (2276), 1970 states have internal predecessors, (2276), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 00:57:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2308 transitions. [2023-11-29 00:57:42,242 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2308 transitions. Word has length 2 [2023-11-29 00:57:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:42,242 INFO L495 AbstractCegarLoop]: Abstraction has 1986 states and 2308 transitions. [2023-11-29 00:57:42,243 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) [2023-11-29 00:57:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2308 transitions. [2023-11-29 00:57:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 00:57:42,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:42,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 00:57:42,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:42,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:57:42,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:57:42,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 111213, now seen corresponding path program 1 times [2023-11-29 00:57:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:57:42,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492950359] [2023-11-29 00:57:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:42,447 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 [2023-11-29 00:57:42,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:57:42,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:57:42,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:57:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:42,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:57:42,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:42,625 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 [2023-11-29 00:57:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:42,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:42,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:57:42,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492950359] [2023-11-29 00:57:42,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492950359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:42,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:42,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:57:42,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028730438] [2023-11-29 00:57:42,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:42,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:57:42,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:57:42,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:57:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:57:42,640 INFO L87 Difference]: Start difference. First operand 1986 states and 2308 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) [2023-11-29 00:57:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:48,563 INFO L93 Difference]: Finished difference Result 2689 states and 3092 transitions. [2023-11-29 00:57:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:57:48,564 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 [2023-11-29 00:57:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:48,576 INFO L225 Difference]: With dead ends: 2689 [2023-11-29 00:57:48,576 INFO L226 Difference]: Without dead ends: 2689 [2023-11-29 00:57:48,577 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 [2023-11-29 00:57:48,578 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 776 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:48,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 2512 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 00:57:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2023-11-29 00:57:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2367. [2023-11-29 00:57:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 1387 states have (on average 2.1997116077865897) internal successors, (3051), 2348 states have internal predecessors, (3051), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 00:57:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3089 transitions. [2023-11-29 00:57:48,626 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3089 transitions. Word has length 2 [2023-11-29 00:57:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:48,626 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 3089 transitions. [2023-11-29 00:57:48,627 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) [2023-11-29 00:57:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3089 transitions. [2023-11-29 00:57:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:57:48,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:48,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:57:48,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:57:48,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:57:48,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:57:48,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:48,830 INFO L85 PathProgramCache]: Analyzing trace with hash -370989770, now seen corresponding path program 1 times [2023-11-29 00:57:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:57:48,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373688896] [2023-11-29 00:57:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:48,831 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 [2023-11-29 00:57:48,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:57:48,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:57:48,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:57:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:49,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:57:49,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:49,013 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 [2023-11-29 00:57:49,019 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 [2023-11-29 00:57:49,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:57:49,082 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 [2023-11-29 00:57:49,103 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:57:49,104 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 [2023-11-29 00:57:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:49,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:49,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:57:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373688896] [2023-11-29 00:57:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373688896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:49,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:49,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:57:49,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004100531] [2023-11-29 00:57:49,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:49,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:49,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:57:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:49,128 INFO L87 Difference]: Start difference. First operand 2367 states and 3089 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2023-11-29 00:57:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:59,789 INFO L93 Difference]: Finished difference Result 4416 states and 5288 transitions. [2023-11-29 00:57:59,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:59,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2023-11-29 00:57:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:59,818 INFO L225 Difference]: With dead ends: 4416 [2023-11-29 00:57:59,818 INFO L226 Difference]: Without dead ends: 4416 [2023-11-29 00:57:59,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:59,819 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 2164 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 3880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:59,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 2074 Invalid, 3880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-11-29 00:57:59,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4416 states. [2023-11-29 00:57:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4416 to 2949. [2023-11-29 00:57:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 1969 states have (on average 2.254443880142204) internal successors, (4439), 2924 states have internal predecessors, (4439), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:57:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4489 transitions. [2023-11-29 00:57:59,909 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4489 transitions. Word has length 6 [2023-11-29 00:57:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:59,909 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4489 transitions. [2023-11-29 00:57:59,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2023-11-29 00:57:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4489 transitions. [2023-11-29 00:57:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:57:59,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:59,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:59,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:58:00,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:00,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:00,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1384219056, now seen corresponding path program 1 times [2023-11-29 00:58:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792713866] [2023-11-29 00:58:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:00,125 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 [2023-11-29 00:58:00,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:00,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:00,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:00,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:58:00,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:00,312 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 [2023-11-29 00:58:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:00,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:00,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:00,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792713866] [2023-11-29 00:58:00,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792713866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:00,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:00,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:58:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657561558] [2023-11-29 00:58:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:00,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:58:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:58:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:00,327 INFO L87 Difference]: Start difference. First operand 2949 states and 4489 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:04,133 INFO L93 Difference]: Finished difference Result 4019 states and 5872 transitions. [2023-11-29 00:58:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:58:04,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 00:58:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:04,152 INFO L225 Difference]: With dead ends: 4019 [2023-11-29 00:58:04,152 INFO L226 Difference]: Without dead ends: 4019 [2023-11-29 00:58:04,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:04,153 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 1812 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:04,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1822 Valid, 2203 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 00:58:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-11-29 00:58:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 2858. [2023-11-29 00:58:04,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 1969 states have (on average 2.1462671406805485) internal successors, (4226), 2833 states have internal predecessors, (4226), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4276 transitions. [2023-11-29 00:58:04,230 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4276 transitions. Word has length 7 [2023-11-29 00:58:04,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:04,231 INFO L495 AbstractCegarLoop]: Abstraction has 2858 states and 4276 transitions. [2023-11-29 00:58:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4276 transitions. [2023-11-29 00:58:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:58:04,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:04,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:04,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 00:58:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:04,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:04,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1384219057, now seen corresponding path program 1 times [2023-11-29 00:58:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116239254] [2023-11-29 00:58:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:04,434 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 [2023-11-29 00:58:04,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:04,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:04,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:04,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:58:04,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:04,574 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 [2023-11-29 00:58:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:04,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:04,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:04,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116239254] [2023-11-29 00:58:04,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116239254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:04,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:04,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:58:04,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67547866] [2023-11-29 00:58:04,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:04,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:58:04,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:04,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:58:04,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:04,599 INFO L87 Difference]: Start difference. First operand 2858 states and 4276 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:10,521 INFO L93 Difference]: Finished difference Result 4373 states and 6433 transitions. [2023-11-29 00:58:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:58:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 00:58:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:10,540 INFO L225 Difference]: With dead ends: 4373 [2023-11-29 00:58:10,540 INFO L226 Difference]: Without dead ends: 4373 [2023-11-29 00:58:10,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:10,540 INFO L413 NwaCegarLoop]: 1948 mSDtfsCounter, 1251 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:10,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 2769 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 00:58:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2023-11-29 00:58:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 3114. [2023-11-29 00:58:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 2235 states have (on average 2.135123042505593) internal successors, (4772), 3089 states have internal predecessors, (4772), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4822 transitions. [2023-11-29 00:58:10,599 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4822 transitions. Word has length 7 [2023-11-29 00:58:10,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:10,600 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 4822 transitions. [2023-11-29 00:58:10,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4822 transitions. [2023-11-29 00:58:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 00:58:10,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:10,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:10,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:10,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:10,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:10,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash 932579515, now seen corresponding path program 1 times [2023-11-29 00:58:10,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:10,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66689466] [2023-11-29 00:58:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:10,804 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 [2023-11-29 00:58:10,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:10,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:10,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:10,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:58:10,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:10,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:10,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:10,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66689466] [2023-11-29 00:58:10,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66689466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:10,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:10,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:58:10,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210605683] [2023-11-29 00:58:10,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:10,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:58:10,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:58:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:10,967 INFO L87 Difference]: Start difference. First operand 3114 states and 4822 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-29 00:58:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:12,292 INFO L93 Difference]: Finished difference Result 3060 states and 4742 transitions. [2023-11-29 00:58:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:58:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2023-11-29 00:58:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:12,304 INFO L225 Difference]: With dead ends: 3060 [2023-11-29 00:58:12,304 INFO L226 Difference]: Without dead ends: 3060 [2023-11-29 00:58:12,305 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 [2023-11-29 00:58:12,305 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 70 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:12,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3195 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:58:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2023-11-29 00:58:12,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2023-11-29 00:58:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2205 states have (on average 2.127891156462585) internal successors, (4692), 3035 states have internal predecessors, (4692), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4742 transitions. [2023-11-29 00:58:12,355 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4742 transitions. Word has length 10 [2023-11-29 00:58:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:12,356 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4742 transitions. [2023-11-29 00:58:12,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-29 00:58:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4742 transitions. [2023-11-29 00:58:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 00:58:12,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:12,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:12,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:58:12,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:12,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr683REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:12,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1439195754, now seen corresponding path program 1 times [2023-11-29 00:58:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:12,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614781428] [2023-11-29 00:58:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:12,559 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 [2023-11-29 00:58:12,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:12,560 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:12,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:12,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:58:12,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:12,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:12,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614781428] [2023-11-29 00:58:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614781428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270445749] [2023-11-29 00:58:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:12,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:12,783 INFO L87 Difference]: Start difference. First operand 3060 states and 4742 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) [2023-11-29 00:58:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:14,481 INFO L93 Difference]: Finished difference Result 3046 states and 4700 transitions. [2023-11-29 00:58:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:14,482 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 [2023-11-29 00:58:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:14,494 INFO L225 Difference]: With dead ends: 3046 [2023-11-29 00:58:14,494 INFO L226 Difference]: Without dead ends: 3046 [2023-11-29 00:58:14,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:14,495 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 58 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:14,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4749 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 00:58:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2023-11-29 00:58:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 3044. [2023-11-29 00:58:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 2203 states have (on average 2.109850204266909) internal successors, (4648), 3019 states have internal predecessors, (4648), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4698 transitions. [2023-11-29 00:58:14,560 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4698 transitions. Word has length 12 [2023-11-29 00:58:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:14,560 INFO L495 AbstractCegarLoop]: Abstraction has 3044 states and 4698 transitions. [2023-11-29 00:58:14,560 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) [2023-11-29 00:58:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4698 transitions. [2023-11-29 00:58:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:58:14,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:14,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:14,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:14,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:14,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:14,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash -918721336, now seen corresponding path program 1 times [2023-11-29 00:58:14,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:14,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570931104] [2023-11-29 00:58:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:14,763 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 [2023-11-29 00:58:14,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:14,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:14,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:14,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:58:14,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:14,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:14,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570931104] [2023-11-29 00:58:14,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570931104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:14,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:14,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:58:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403529938] [2023-11-29 00:58:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:14,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:58:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:58:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:14,960 INFO L87 Difference]: Start difference. First operand 3044 states and 4698 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-29 00:58:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:16,429 INFO L93 Difference]: Finished difference Result 2930 states and 4458 transitions. [2023-11-29 00:58:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:58:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-29 00:58:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:16,438 INFO L225 Difference]: With dead ends: 2930 [2023-11-29 00:58:16,438 INFO L226 Difference]: Without dead ends: 2930 [2023-11-29 00:58:16,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:16,439 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 70 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:16,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3079 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:58:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-11-29 00:58:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2930. [2023-11-29 00:58:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2113 states have (on average 2.0861334595362044) internal successors, (4408), 2905 states have internal predecessors, (4408), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4458 transitions. [2023-11-29 00:58:16,497 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4458 transitions. Word has length 17 [2023-11-29 00:58:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:16,497 INFO L495 AbstractCegarLoop]: Abstraction has 2930 states and 4458 transitions. [2023-11-29 00:58:16,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-29 00:58:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4458 transitions. [2023-11-29 00:58:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:58:16,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:16,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:16,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:16,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:16,699 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:16,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:16,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1123191928, now seen corresponding path program 1 times [2023-11-29 00:58:16,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:16,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874310603] [2023-11-29 00:58:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:16,700 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 [2023-11-29 00:58:16,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:16,701 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:16,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:16,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:58:16,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:16,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:16,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874310603] [2023-11-29 00:58:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874310603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:16,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:58:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661204197] [2023-11-29 00:58:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:16,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:58:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:58:16,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:16,915 INFO L87 Difference]: Start difference. First operand 2930 states and 4458 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-29 00:58:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:18,312 INFO L93 Difference]: Finished difference Result 2876 states and 4378 transitions. [2023-11-29 00:58:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:58:18,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-29 00:58:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:18,320 INFO L225 Difference]: With dead ends: 2876 [2023-11-29 00:58:18,320 INFO L226 Difference]: Without dead ends: 2876 [2023-11-29 00:58:18,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:18,321 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 70 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3005 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:58:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2023-11-29 00:58:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2876. [2023-11-29 00:58:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2083 states have (on average 2.0777724435909746) internal successors, (4328), 2851 states have internal predecessors, (4328), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4378 transitions. [2023-11-29 00:58:18,369 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4378 transitions. Word has length 17 [2023-11-29 00:58:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:18,369 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 4378 transitions. [2023-11-29 00:58:18,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-29 00:58:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4378 transitions. [2023-11-29 00:58:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 00:58:18,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:18,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:18,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 00:58:18,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:18,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr358REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:18,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1872085794, now seen corresponding path program 1 times [2023-11-29 00:58:18,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:18,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968784143] [2023-11-29 00:58:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:18,575 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 [2023-11-29 00:58:18,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:18,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:18,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:18,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:58:18,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:18,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:18,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:18,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968784143] [2023-11-29 00:58:18,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968784143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:18,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:18,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:18,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065284800] [2023-11-29 00:58:18,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:18,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:18,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:18,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:18,776 INFO L87 Difference]: Start difference. First operand 2876 states and 4378 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 00:58:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:20,239 INFO L93 Difference]: Finished difference Result 2862 states and 4252 transitions. [2023-11-29 00:58:20,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:20,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2023-11-29 00:58:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:20,245 INFO L225 Difference]: With dead ends: 2862 [2023-11-29 00:58:20,245 INFO L226 Difference]: Without dead ends: 2862 [2023-11-29 00:58:20,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:20,246 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 58 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:20,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4464 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:58:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-11-29 00:58:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2856. [2023-11-29 00:58:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2077 states have (on average 2.0202214732787676) internal successors, (4196), 2831 states have internal predecessors, (4196), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4246 transitions. [2023-11-29 00:58:20,275 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4246 transitions. Word has length 19 [2023-11-29 00:58:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:20,275 INFO L495 AbstractCegarLoop]: Abstraction has 2856 states and 4246 transitions. [2023-11-29 00:58:20,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 00:58:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4246 transitions. [2023-11-29 00:58:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 00:58:20,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:20,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:20,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:20,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:20,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:20,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1350652894, now seen corresponding path program 1 times [2023-11-29 00:58:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092937941] [2023-11-29 00:58:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:20,478 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 [2023-11-29 00:58:20,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:20,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:20,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:20,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:58:20,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:20,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:20,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:20,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092937941] [2023-11-29 00:58:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092937941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:20,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:20,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:20,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145501812] [2023-11-29 00:58:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:20,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:20,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:20,688 INFO L87 Difference]: Start difference. First operand 2856 states and 4246 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 00:58:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:22,479 INFO L93 Difference]: Finished difference Result 2842 states and 4204 transitions. [2023-11-29 00:58:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:22,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2023-11-29 00:58:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:22,485 INFO L225 Difference]: With dead ends: 2842 [2023-11-29 00:58:22,485 INFO L226 Difference]: Without dead ends: 2842 [2023-11-29 00:58:22,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:22,485 INFO L413 NwaCegarLoop]: 1475 mSDtfsCounter, 58 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:22,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4401 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 00:58:22,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2023-11-29 00:58:22,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2840. [2023-11-29 00:58:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2075 states have (on average 2.000963855421687) internal successors, (4152), 2815 states have internal predecessors, (4152), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4202 transitions. [2023-11-29 00:58:22,512 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4202 transitions. Word has length 19 [2023-11-29 00:58:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:22,512 INFO L495 AbstractCegarLoop]: Abstraction has 2840 states and 4202 transitions. [2023-11-29 00:58:22,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 00:58:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4202 transitions. [2023-11-29 00:58:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:58:22,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:22,513 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] [2023-11-29 00:58:22,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 00:58:22,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:22,714 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:22,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:22,714 INFO L85 PathProgramCache]: Analyzing trace with hash 625872259, now seen corresponding path program 1 times [2023-11-29 00:58:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121455417] [2023-11-29 00:58:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:22,715 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 [2023-11-29 00:58:22,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:22,716 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:22,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:22,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:58:22,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:22,870 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 [2023-11-29 00:58:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:22,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:22,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121455417] [2023-11-29 00:58:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121455417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:22,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:22,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:58:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517524265] [2023-11-29 00:58:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:22,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:22,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:22,938 INFO L87 Difference]: Start difference. First operand 2840 states and 4202 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-29 00:58:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:26,599 INFO L93 Difference]: Finished difference Result 3098 states and 4357 transitions. [2023-11-29 00:58:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:26,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-29 00:58:26,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:26,605 INFO L225 Difference]: With dead ends: 3098 [2023-11-29 00:58:26,605 INFO L226 Difference]: Without dead ends: 3098 [2023-11-29 00:58:26,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:26,606 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1499 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:26,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2063 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 00:58:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2023-11-29 00:58:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2836. [2023-11-29 00:58:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2075 states have (on average 1.9971084337349398) internal successors, (4144), 2811 states have internal predecessors, (4144), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4194 transitions. [2023-11-29 00:58:26,637 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4194 transitions. Word has length 26 [2023-11-29 00:58:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:26,638 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 4194 transitions. [2023-11-29 00:58:26,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-29 00:58:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4194 transitions. [2023-11-29 00:58:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:58:26,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:26,639 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] [2023-11-29 00:58:26,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 00:58:26,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:26,840 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:26,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash 625872260, now seen corresponding path program 1 times [2023-11-29 00:58:26,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:26,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165207850] [2023-11-29 00:58:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:26,841 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 [2023-11-29 00:58:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:26,841 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:26,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:58:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:27,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:58:27,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:27,050 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 [2023-11-29 00:58:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:27,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:27,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:27,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165207850] [2023-11-29 00:58:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165207850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:27,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:58:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775635090] [2023-11-29 00:58:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:27,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:27,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:27,214 INFO L87 Difference]: Start difference. First operand 2836 states and 4194 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-29 00:58:33,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:33,042 INFO L93 Difference]: Finished difference Result 3478 states and 4909 transitions. [2023-11-29 00:58:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:33,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-29 00:58:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:33,049 INFO L225 Difference]: With dead ends: 3478 [2023-11-29 00:58:33,049 INFO L226 Difference]: Without dead ends: 3478 [2023-11-29 00:58:33,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:33,050 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 711 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:33,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2885 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 00:58:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2023-11-29 00:58:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2869. [2023-11-29 00:58:33,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2108 states have (on average 1.9838709677419355) internal successors, (4182), 2844 states have internal predecessors, (4182), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4232 transitions. [2023-11-29 00:58:33,093 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4232 transitions. Word has length 26 [2023-11-29 00:58:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:33,094 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 4232 transitions. [2023-11-29 00:58:33,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-29 00:58:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4232 transitions. [2023-11-29 00:58:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:58:33,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:33,095 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] [2023-11-29 00:58:33,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 00:58:33,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:33,296 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:33,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1555497584, now seen corresponding path program 1 times [2023-11-29 00:58:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089435081] [2023-11-29 00:58:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:33,297 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 [2023-11-29 00:58:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:33,298 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:33,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 00:58:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:33,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:58:33,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:33,500 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 [2023-11-29 00:58:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:33,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:33,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:33,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089435081] [2023-11-29 00:58:33,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089435081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:33,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:33,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:58:33,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262142241] [2023-11-29 00:58:33,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:33,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:33,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:33,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:33,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:33,564 INFO L87 Difference]: Start difference. First operand 2869 states and 4232 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:37,726 INFO L93 Difference]: Finished difference Result 3927 states and 5690 transitions. [2023-11-29 00:58:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:58:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-11-29 00:58:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:37,733 INFO L225 Difference]: With dead ends: 3927 [2023-11-29 00:58:37,733 INFO L226 Difference]: Without dead ends: 3927 [2023-11-29 00:58:37,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:37,733 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 1621 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:37,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 3215 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 00:58:37,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2023-11-29 00:58:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 2866. [2023-11-29 00:58:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2108 states have (on average 1.9734345351043643) internal successors, (4160), 2841 states have internal predecessors, (4160), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4210 transitions. [2023-11-29 00:58:37,765 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4210 transitions. Word has length 33 [2023-11-29 00:58:37,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:37,765 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4210 transitions. [2023-11-29 00:58:37,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4210 transitions. [2023-11-29 00:58:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:58:37,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:37,766 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] [2023-11-29 00:58:37,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 00:58:37,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:37,967 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:37,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1555497583, now seen corresponding path program 1 times [2023-11-29 00:58:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028415401] [2023-11-29 00:58:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:37,968 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 [2023-11-29 00:58:37,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:37,969 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:37,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 00:58:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:38,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:58:38,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:38,177 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 [2023-11-29 00:58:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:38,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:38,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028415401] [2023-11-29 00:58:38,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028415401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:38,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:38,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:58:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135764114] [2023-11-29 00:58:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:38,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:38,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:38,361 INFO L87 Difference]: Start difference. First operand 2866 states and 4210 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:45,005 INFO L93 Difference]: Finished difference Result 4005 states and 5681 transitions. [2023-11-29 00:58:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:45,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-11-29 00:58:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:45,010 INFO L225 Difference]: With dead ends: 4005 [2023-11-29 00:58:45,010 INFO L226 Difference]: Without dead ends: 4005 [2023-11-29 00:58:45,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:45,011 INFO L413 NwaCegarLoop]: 1788 mSDtfsCounter, 1044 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:45,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3769 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 00:58:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2023-11-29 00:58:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 2866. [2023-11-29 00:58:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2108 states have (on average 1.9696394686907022) internal successors, (4152), 2841 states have internal predecessors, (4152), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4202 transitions. [2023-11-29 00:58:45,054 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4202 transitions. Word has length 33 [2023-11-29 00:58:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:45,055 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4202 transitions. [2023-11-29 00:58:45,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4202 transitions. [2023-11-29 00:58:45,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:58:45,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:45,056 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] [2023-11-29 00:58:45,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 00:58:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:45,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:45,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash -762554800, now seen corresponding path program 1 times [2023-11-29 00:58:45,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:45,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045829819] [2023-11-29 00:58:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:45,257 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 [2023-11-29 00:58:45,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:45,258 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:45,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 00:58:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:45,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:58:45,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:45,476 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 [2023-11-29 00:58:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:45,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:45,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:45,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045829819] [2023-11-29 00:58:45,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045829819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:45,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:45,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:58:45,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646169907] [2023-11-29 00:58:45,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:45,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:45,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:45,541 INFO L87 Difference]: Start difference. First operand 2866 states and 4202 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:49,838 INFO L93 Difference]: Finished difference Result 3907 states and 5658 transitions. [2023-11-29 00:58:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:49,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-11-29 00:58:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:49,842 INFO L225 Difference]: With dead ends: 3907 [2023-11-29 00:58:49,842 INFO L226 Difference]: Without dead ends: 3907 [2023-11-29 00:58:49,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:49,843 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1599 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:49,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 3177 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 00:58:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2023-11-29 00:58:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 2862. [2023-11-29 00:58:49,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2108 states have (on average 1.9658444022770398) internal successors, (4144), 2837 states have internal predecessors, (4144), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4194 transitions. [2023-11-29 00:58:49,895 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4194 transitions. Word has length 33 [2023-11-29 00:58:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 4194 transitions. [2023-11-29 00:58:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4194 transitions. [2023-11-29 00:58:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:58:49,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:49,896 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] [2023-11-29 00:58:49,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 00:58:50,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:50,097 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:50,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash -762554799, now seen corresponding path program 1 times [2023-11-29 00:58:50,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:50,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837509946] [2023-11-29 00:58:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:50,098 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 [2023-11-29 00:58:50,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:50,099 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:50,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 00:58:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:50,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:58:50,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:50,316 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 [2023-11-29 00:58:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:50,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:50,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837509946] [2023-11-29 00:58:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837509946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:50,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:50,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:58:50,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187389017] [2023-11-29 00:58:50,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:50,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:50,485 INFO L87 Difference]: Start difference. First operand 2862 states and 4194 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:56,997 INFO L93 Difference]: Finished difference Result 3997 states and 5665 transitions. [2023-11-29 00:58:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:56,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-11-29 00:58:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:57,001 INFO L225 Difference]: With dead ends: 3997 [2023-11-29 00:58:57,001 INFO L226 Difference]: Without dead ends: 3997 [2023-11-29 00:58:57,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:57,002 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 1036 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:57,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 3732 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 00:58:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2023-11-29 00:58:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 2858. [2023-11-29 00:58:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2108 states have (on average 1.9620493358633777) internal successors, (4136), 2833 states have internal predecessors, (4136), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4186 transitions. [2023-11-29 00:58:57,031 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4186 transitions. Word has length 33 [2023-11-29 00:58:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:57,032 INFO L495 AbstractCegarLoop]: Abstraction has 2858 states and 4186 transitions. [2023-11-29 00:58:57,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-29 00:58:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4186 transitions. [2023-11-29 00:58:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:58:57,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:57,033 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] [2023-11-29 00:58:57,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 00:58:57,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:57,233 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:57,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:57,234 INFO L85 PathProgramCache]: Analyzing trace with hash 90379773, now seen corresponding path program 1 times [2023-11-29 00:58:57,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:57,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203493326] [2023-11-29 00:58:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:57,234 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 [2023-11-29 00:58:57,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:57,235 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:57,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 00:58:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:57,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:58:57,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:57,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:57,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:57,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203493326] [2023-11-29 00:58:57,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203493326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:57,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:57,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:57,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432231881] [2023-11-29 00:58:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:57,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:57,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:58:57,469 INFO L87 Difference]: Start difference. First operand 2858 states and 4186 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-29 00:58:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:58:59,038 INFO L93 Difference]: Finished difference Result 2846 states and 4162 transitions. [2023-11-29 00:58:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2023-11-29 00:58:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:58:59,042 INFO L225 Difference]: With dead ends: 2846 [2023-11-29 00:58:59,042 INFO L226 Difference]: Without dead ends: 2846 [2023-11-29 00:58:59,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:59,043 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 31 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:58:59,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4358 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 00:58:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-11-29 00:58:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2846. [2023-11-29 00:58:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2096 states have (on average 1.9618320610687023) internal successors, (4112), 2821 states have internal predecessors, (4112), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 00:58:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4162 transitions. [2023-11-29 00:58:59,066 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4162 transitions. Word has length 40 [2023-11-29 00:58:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:58:59,066 INFO L495 AbstractCegarLoop]: Abstraction has 2846 states and 4162 transitions. [2023-11-29 00:58:59,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-29 00:58:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4162 transitions. [2023-11-29 00:58:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 00:58:59,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:58:59,067 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] [2023-11-29 00:58:59,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 00:58:59,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:58:59,267 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:58:59,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1582850426, now seen corresponding path program 1 times [2023-11-29 00:58:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:58:59,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153350087] [2023-11-29 00:58:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:59,268 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 [2023-11-29 00:58:59,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:58:59,269 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:58:59,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 00:58:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:59,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:58:59,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:59,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:59,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:58:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153350087] [2023-11-29 00:58:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153350087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:59,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:59,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:58:59,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004909482] [2023-11-29 00:58:59,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:59,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:58:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:58:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:58:59,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:58:59,623 INFO L87 Difference]: Start difference. First operand 2846 states and 4162 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2023-11-29 00:59:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:01,222 INFO L93 Difference]: Finished difference Result 4142 states and 5828 transitions. [2023-11-29 00:59:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:59:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2023-11-29 00:59:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:01,226 INFO L225 Difference]: With dead ends: 4142 [2023-11-29 00:59:01,226 INFO L226 Difference]: Without dead ends: 4142 [2023-11-29 00:59:01,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:59:01,227 INFO L413 NwaCegarLoop]: 1478 mSDtfsCounter, 1073 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:01,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2842 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 00:59:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2023-11-29 00:59:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3510. [2023-11-29 00:59:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2756 states have (on average 1.9448476052249637) internal successors, (5360), 3478 states have internal predecessors, (5360), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 00:59:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5424 transitions. [2023-11-29 00:59:01,262 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5424 transitions. Word has length 44 [2023-11-29 00:59:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:01,262 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5424 transitions. [2023-11-29 00:59:01,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2023-11-29 00:59:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5424 transitions. [2023-11-29 00:59:01,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 00:59:01,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:01,263 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] [2023-11-29 00:59:01,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 00:59:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:01,464 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:01,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2102585590, now seen corresponding path program 1 times [2023-11-29 00:59:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:01,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671280213] [2023-11-29 00:59:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:01,465 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 [2023-11-29 00:59:01,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:01,466 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:01,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 00:59:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:01,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:59:01,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:01,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:01,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:01,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671280213] [2023-11-29 00:59:01,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671280213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:01,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173547557] [2023-11-29 00:59:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:01,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:01,747 INFO L87 Difference]: Start difference. First operand 3510 states and 5424 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-29 00:59:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:03,201 INFO L93 Difference]: Finished difference Result 3468 states and 5354 transitions. [2023-11-29 00:59:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:03,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2023-11-29 00:59:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:03,206 INFO L225 Difference]: With dead ends: 3468 [2023-11-29 00:59:03,206 INFO L226 Difference]: Without dead ends: 3468 [2023-11-29 00:59:03,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:03,207 INFO L413 NwaCegarLoop]: 1458 mSDtfsCounter, 33 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:03,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4344 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:59:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-11-29 00:59:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3468. [2023-11-29 00:59:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 2714 states have (on average 1.9491525423728813) internal successors, (5290), 3436 states have internal predecessors, (5290), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 00:59:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 5354 transitions. [2023-11-29 00:59:03,236 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 5354 transitions. Word has length 49 [2023-11-29 00:59:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:03,236 INFO L495 AbstractCegarLoop]: Abstraction has 3468 states and 5354 transitions. [2023-11-29 00:59:03,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-11-29 00:59:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 5354 transitions. [2023-11-29 00:59:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 00:59:03,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:03,237 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] [2023-11-29 00:59:03,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 00:59:03,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:03,438 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:03,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -53364541, now seen corresponding path program 1 times [2023-11-29 00:59:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704968439] [2023-11-29 00:59:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:03,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:03,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:03,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:03,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 00:59:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:03,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:59:03,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:03,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:03,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704968439] [2023-11-29 00:59:03,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704968439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:03,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:03,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074804824] [2023-11-29 00:59:03,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:03,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:03,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:03,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:03,746 INFO L87 Difference]: Start difference. First operand 3468 states and 5354 transitions. Second operand has 4 states, 4 states have (on average 13.0) 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) [2023-11-29 00:59:05,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:05,149 INFO L93 Difference]: Finished difference Result 3450 states and 5324 transitions. [2023-11-29 00:59:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:05,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) 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) Word has length 52 [2023-11-29 00:59:05,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:05,153 INFO L225 Difference]: With dead ends: 3450 [2023-11-29 00:59:05,153 INFO L226 Difference]: Without dead ends: 3450 [2023-11-29 00:59:05,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:05,154 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 23 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:05,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4342 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:59:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2023-11-29 00:59:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3450. [2023-11-29 00:59:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 2696 states have (on average 1.9510385756676558) internal successors, (5260), 3418 states have internal predecessors, (5260), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 00:59:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 5324 transitions. [2023-11-29 00:59:05,187 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 5324 transitions. Word has length 52 [2023-11-29 00:59:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:05,187 INFO L495 AbstractCegarLoop]: Abstraction has 3450 states and 5324 transitions. [2023-11-29 00:59:05,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) 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) [2023-11-29 00:59:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 5324 transitions. [2023-11-29 00:59:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 00:59:05,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:05,188 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, 1, 1, 1] [2023-11-29 00:59:05,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:59:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:05,389 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:05,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -630789957, now seen corresponding path program 1 times [2023-11-29 00:59:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073559829] [2023-11-29 00:59:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:05,390 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 [2023-11-29 00:59:05,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:05,390 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:05,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 00:59:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:05,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:59:05,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:05,649 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:59:05,649 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:59:05,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:59:05,652 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 [2023-11-29 00:59:05,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:59:05,707 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 [2023-11-29 00:59:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:05,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:05,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:05,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073559829] [2023-11-29 00:59:05,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073559829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:05,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:05,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:05,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442486843] [2023-11-29 00:59:05,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:05,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:05,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:05,726 INFO L87 Difference]: Start difference. First operand 3450 states and 5324 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:08,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:08,690 INFO L93 Difference]: Finished difference Result 4739 states and 7184 transitions. [2023-11-29 00:59:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 00:59:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:08,696 INFO L225 Difference]: With dead ends: 4739 [2023-11-29 00:59:08,697 INFO L226 Difference]: Without dead ends: 4739 [2023-11-29 00:59:08,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:08,697 INFO L413 NwaCegarLoop]: 1822 mSDtfsCounter, 850 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 5049 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:08,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 5049 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 00:59:08,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2023-11-29 00:59:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 3419. [2023-11-29 00:59:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 2665 states have (on average 1.9617260787992494) internal successors, (5228), 3387 states have internal predecessors, (5228), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 00:59:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5292 transitions. [2023-11-29 00:59:08,749 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5292 transitions. Word has length 55 [2023-11-29 00:59:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:08,749 INFO L495 AbstractCegarLoop]: Abstraction has 3419 states and 5292 transitions. [2023-11-29 00:59:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5292 transitions. [2023-11-29 00:59:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 00:59:08,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:08,750 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, 1] [2023-11-29 00:59:08,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 00:59:08,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:08,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:08,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1835299796, now seen corresponding path program 1 times [2023-11-29 00:59:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:08,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695553131] [2023-11-29 00:59:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:08,952 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 [2023-11-29 00:59:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:08,953 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:08,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:59:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:09,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:59:09,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:09,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:09,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695553131] [2023-11-29 00:59:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695553131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:09,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:09,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:59:09,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168710820] [2023-11-29 00:59:09,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:59:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:59:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:59:09,460 INFO L87 Difference]: Start difference. First operand 3419 states and 5292 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-11-29 00:59:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:11,279 INFO L93 Difference]: Finished difference Result 4549 states and 6755 transitions. [2023-11-29 00:59:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:59:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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 53 [2023-11-29 00:59:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:11,284 INFO L225 Difference]: With dead ends: 4549 [2023-11-29 00:59:11,284 INFO L226 Difference]: Without dead ends: 4549 [2023-11-29 00:59:11,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:59:11,285 INFO L413 NwaCegarLoop]: 1691 mSDtfsCounter, 790 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:11,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 3046 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 00:59:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2023-11-29 00:59:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4204. [2023-11-29 00:59:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4204 states, 3444 states have (on average 1.9337979094076656) internal successors, (6660), 4163 states have internal predecessors, (6660), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-29 00:59:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6742 transitions. [2023-11-29 00:59:11,326 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6742 transitions. Word has length 53 [2023-11-29 00:59:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:11,326 INFO L495 AbstractCegarLoop]: Abstraction has 4204 states and 6742 transitions. [2023-11-29 00:59:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-11-29 00:59:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6742 transitions. [2023-11-29 00:59:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 00:59:11,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:11,327 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, 1, 1, 1, 1] [2023-11-29 00:59:11,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 00:59:11,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:11,527 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:11,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -589068081, now seen corresponding path program 1 times [2023-11-29 00:59:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:11,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004046463] [2023-11-29 00:59:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:11,528 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 [2023-11-29 00:59:11,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:11,529 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:11,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 00:59:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:11,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:59:11,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:11,872 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:59:11,873 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:59:11,873 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:59:11,876 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 [2023-11-29 00:59:12,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:59:12,034 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 [2023-11-29 00:59:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:12,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:12,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004046463] [2023-11-29 00:59:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004046463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:12,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:12,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089062834] [2023-11-29 00:59:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:12,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:12,048 INFO L87 Difference]: Start difference. First operand 4204 states and 6742 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-11-29 00:59:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:14,871 INFO L93 Difference]: Finished difference Result 4554 states and 6842 transitions. [2023-11-29 00:59:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:14,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2023-11-29 00:59:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:14,877 INFO L225 Difference]: With dead ends: 4554 [2023-11-29 00:59:14,877 INFO L226 Difference]: Without dead ends: 4554 [2023-11-29 00:59:14,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:14,878 INFO L413 NwaCegarLoop]: 1461 mSDtfsCounter, 803 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 4327 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:14,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 4327 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 00:59:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2023-11-29 00:59:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3836. [2023-11-29 00:59:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 3076 states have (on average 1.9596879063719115) internal successors, (6028), 3798 states have internal predecessors, (6028), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:59:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 6104 transitions. [2023-11-29 00:59:14,926 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 6104 transitions. Word has length 56 [2023-11-29 00:59:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:14,926 INFO L495 AbstractCegarLoop]: Abstraction has 3836 states and 6104 transitions. [2023-11-29 00:59:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-11-29 00:59:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 6104 transitions. [2023-11-29 00:59:14,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 00:59:14,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:14,927 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, 1, 1, 1, 1] [2023-11-29 00:59:14,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 00:59:15,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:15,128 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:15,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:15,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1880804482, now seen corresponding path program 1 times [2023-11-29 00:59:15,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:15,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282407796] [2023-11-29 00:59:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:15,130 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 [2023-11-29 00:59:15,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:15,131 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:15,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:59:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:15,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:59:15,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:15,477 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 [2023-11-29 00:59:15,482 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 [2023-11-29 00:59:15,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:59:15,889 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 [2023-11-29 00:59:15,901 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:59:15,902 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 [2023-11-29 00:59:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:15,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:15,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282407796] [2023-11-29 00:59:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282407796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:15,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:15,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:59:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173702097] [2023-11-29 00:59:15,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:15,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:15,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:15,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:15,913 INFO L87 Difference]: Start difference. First operand 3836 states and 6104 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-11-29 00:59:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:21,298 INFO L93 Difference]: Finished difference Result 5566 states and 8849 transitions. [2023-11-29 00:59:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:21,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2023-11-29 00:59:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:21,304 INFO L225 Difference]: With dead ends: 5566 [2023-11-29 00:59:21,304 INFO L226 Difference]: Without dead ends: 5566 [2023-11-29 00:59:21,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:21,304 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 3661 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:21,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3675 Valid, 822 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 00:59:21,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2023-11-29 00:59:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 3654. [2023-11-29 00:59:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 2978 states have (on average 1.8727333781061115) internal successors, (5577), 3616 states have internal predecessors, (5577), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:59:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5653 transitions. [2023-11-29 00:59:21,360 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5653 transitions. Word has length 56 [2023-11-29 00:59:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:21,360 INFO L495 AbstractCegarLoop]: Abstraction has 3654 states and 5653 transitions. [2023-11-29 00:59:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-11-29 00:59:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5653 transitions. [2023-11-29 00:59:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 00:59:21,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:21,361 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:21,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 00:59:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:21,562 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:21,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash -967822378, now seen corresponding path program 1 times [2023-11-29 00:59:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:21,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152087029] [2023-11-29 00:59:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:21,563 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 [2023-11-29 00:59:21,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:21,564 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:21,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 00:59:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:21,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:59:21,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:21,866 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 [2023-11-29 00:59:21,883 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 19 treesize of output 1 [2023-11-29 00:59:21,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 00:59:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:21,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:21,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:21,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152087029] [2023-11-29 00:59:21,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152087029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:21,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:21,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207017631] [2023-11-29 00:59:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:21,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:59:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:59:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:21,917 INFO L87 Difference]: Start difference. First operand 3654 states and 5653 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-11-29 00:59:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:26,886 INFO L93 Difference]: Finished difference Result 3653 states and 5650 transitions. [2023-11-29 00:59:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:59:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-11-29 00:59:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:26,889 INFO L225 Difference]: With dead ends: 3653 [2023-11-29 00:59:26,889 INFO L226 Difference]: Without dead ends: 3653 [2023-11-29 00:59:26,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:59:26,890 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 3 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:26,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3789 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 00:59:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2023-11-29 00:59:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2023-11-29 00:59:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 2978 states have (on average 1.8717259905977166) internal successors, (5574), 3615 states have internal predecessors, (5574), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:59:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5650 transitions. [2023-11-29 00:59:26,925 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5650 transitions. Word has length 60 [2023-11-29 00:59:26,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:26,926 INFO L495 AbstractCegarLoop]: Abstraction has 3653 states and 5650 transitions. [2023-11-29 00:59:26,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-11-29 00:59:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5650 transitions. [2023-11-29 00:59:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 00:59:26,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:26,926 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:26,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 00:59:27,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:27,127 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:27,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash -967822377, now seen corresponding path program 1 times [2023-11-29 00:59:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:27,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231081760] [2023-11-29 00:59:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:27,128 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 [2023-11-29 00:59:27,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:27,128 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:27,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 00:59:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:27,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:59:27,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:27,425 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 [2023-11-29 00:59:27,448 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 13 treesize of output 9 [2023-11-29 00:59:27,458 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 19 treesize of output 1 [2023-11-29 00:59:27,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 00:59:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:27,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:27,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:27,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231081760] [2023-11-29 00:59:27,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231081760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:27,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:27,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:27,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970307625] [2023-11-29 00:59:27,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:59:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:59:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:27,540 INFO L87 Difference]: Start difference. First operand 3653 states and 5650 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-11-29 00:59:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:34,860 INFO L93 Difference]: Finished difference Result 3652 states and 5647 transitions. [2023-11-29 00:59:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:59:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-11-29 00:59:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:34,864 INFO L225 Difference]: With dead ends: 3652 [2023-11-29 00:59:34,864 INFO L226 Difference]: Without dead ends: 3652 [2023-11-29 00:59:34,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:59:34,865 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 1 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:34,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3762 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-29 00:59:34,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2023-11-29 00:59:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3652. [2023-11-29 00:59:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2975 states have (on average 1.8726050420168068) internal successors, (5571), 3614 states have internal predecessors, (5571), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:59:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5647 transitions. [2023-11-29 00:59:34,910 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5647 transitions. Word has length 60 [2023-11-29 00:59:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:34,910 INFO L495 AbstractCegarLoop]: Abstraction has 3652 states and 5647 transitions. [2023-11-29 00:59:34,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-11-29 00:59:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5647 transitions. [2023-11-29 00:59:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:59:34,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:34,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:34,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-29 00:59:35,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:35,111 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:35,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash -61054182, now seen corresponding path program 1 times [2023-11-29 00:59:35,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:35,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640762852] [2023-11-29 00:59:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:35,112 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 [2023-11-29 00:59:35,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:35,113 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:35,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 00:59:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:35,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:59:35,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:35,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:59:35,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640762852] [2023-11-29 00:59:35,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640762852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:35,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:35,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:59:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786883294] [2023-11-29 00:59:35,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:35,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:35,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:35,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:35,460 INFO L87 Difference]: Start difference. First operand 3652 states and 5647 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:59:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:37,257 INFO L93 Difference]: Finished difference Result 3654 states and 5654 transitions. [2023-11-29 00:59:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:37,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-11-29 00:59:37,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:37,265 INFO L225 Difference]: With dead ends: 3654 [2023-11-29 00:59:37,266 INFO L226 Difference]: Without dead ends: 3654 [2023-11-29 00:59:37,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:59:37,266 INFO L413 NwaCegarLoop]: 1381 mSDtfsCounter, 1 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4137 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:37,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4137 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 00:59:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2023-11-29 00:59:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3654. [2023-11-29 00:59:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 2976 states have (on average 1.8726478494623655) internal successors, (5573), 3616 states have internal predecessors, (5573), 38 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 00:59:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5654 transitions. [2023-11-29 00:59:37,316 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5654 transitions. Word has length 66 [2023-11-29 00:59:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:37,316 INFO L495 AbstractCegarLoop]: Abstraction has 3654 states and 5654 transitions. [2023-11-29 00:59:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:59:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5654 transitions. [2023-11-29 00:59:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 00:59:37,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:37,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:37,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-29 00:59:37,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:37,518 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:37,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1590544581, now seen corresponding path program 1 times [2023-11-29 00:59:37,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:37,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435155006] [2023-11-29 00:59:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:37,519 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 [2023-11-29 00:59:37,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:37,520 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:37,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 00:59:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:37,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:59:37,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:37,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:59:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:37,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:37,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435155006] [2023-11-29 00:59:37,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435155006] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:59:37,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:59:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 00:59:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484319003] [2023-11-29 00:59:37,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:59:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:59:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:59:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:59:37,951 INFO L87 Difference]: Start difference. First operand 3654 states and 5654 transitions. Second operand has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:59:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:41,550 INFO L93 Difference]: Finished difference Result 3663 states and 5672 transitions. [2023-11-29 00:59:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:59:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-11-29 00:59:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:41,560 INFO L225 Difference]: With dead ends: 3663 [2023-11-29 00:59:41,560 INFO L226 Difference]: Without dead ends: 3663 [2023-11-29 00:59:41,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:59:41,561 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 6 mSDsluCounter, 8250 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9629 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:41,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9629 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 00:59:41,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2023-11-29 00:59:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3662. [2023-11-29 00:59:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 2983 states have (on average 1.872611464968153) internal successors, (5586), 3623 states have internal predecessors, (5586), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 00:59:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5667 transitions. [2023-11-29 00:59:41,596 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5667 transitions. Word has length 67 [2023-11-29 00:59:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:41,597 INFO L495 AbstractCegarLoop]: Abstraction has 3662 states and 5667 transitions. [2023-11-29 00:59:41,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:59:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5667 transitions. [2023-11-29 00:59:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 00:59:41,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:41,597 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:41,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-29 00:59:41,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:41,798 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:41,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1067584038, now seen corresponding path program 2 times [2023-11-29 00:59:41,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:41,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382127946] [2023-11-29 00:59:41,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:59:41,799 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 [2023-11-29 00:59:41,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:41,800 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:41,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 00:59:42,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:59:42,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:59:42,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:59:42,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:42,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:59:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:42,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382127946] [2023-11-29 00:59:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382127946] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:59:42,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:59:42,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 00:59:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610783641] [2023-11-29 00:59:42,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:59:42,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:59:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:59:42,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:59:42,686 INFO L87 Difference]: Start difference. First operand 3662 states and 5667 transitions. Second operand has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:59:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:47,142 INFO L93 Difference]: Finished difference Result 3677 states and 5712 transitions. [2023-11-29 00:59:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:59:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-11-29 00:59:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:47,151 INFO L225 Difference]: With dead ends: 3677 [2023-11-29 00:59:47,151 INFO L226 Difference]: Without dead ends: 3674 [2023-11-29 00:59:47,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=383, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:59:47,152 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 12 mSDsluCounter, 8244 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9621 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:47,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9621 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 00:59:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2023-11-29 00:59:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3671. [2023-11-29 00:59:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 2992 states have (on average 1.8706550802139037) internal successors, (5597), 3632 states have internal predecessors, (5597), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 00:59:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5678 transitions. [2023-11-29 00:59:47,202 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5678 transitions. Word has length 70 [2023-11-29 00:59:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:47,202 INFO L495 AbstractCegarLoop]: Abstraction has 3671 states and 5678 transitions. [2023-11-29 00:59:47,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:59:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5678 transitions. [2023-11-29 00:59:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 00:59:47,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:47,203 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:47,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 00:59:47,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:47,404 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:47,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash 237600250, now seen corresponding path program 3 times [2023-11-29 00:59:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002086204] [2023-11-29 00:59:47,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:59:47,405 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 [2023-11-29 00:59:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:47,406 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:47,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 00:59:48,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 00:59:48,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:59:48,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:59:48,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:48,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:59:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:49,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:59:49,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002086204] [2023-11-29 00:59:49,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002086204] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:59:49,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:59:49,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 00:59:49,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500769346] [2023-11-29 00:59:49,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:59:49,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:59:49,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:59:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:59:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:59:49,138 INFO L87 Difference]: Start difference. First operand 3671 states and 5678 transitions. Second operand has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:59:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:58,079 INFO L93 Difference]: Finished difference Result 3700 states and 5796 transitions. [2023-11-29 00:59:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 00:59:58,080 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2023-11-29 00:59:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:58,086 INFO L225 Difference]: With dead ends: 3700 [2023-11-29 00:59:58,086 INFO L226 Difference]: Without dead ends: 3697 [2023-11-29 00:59:58,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 00:59:58,087 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 23 mSDsluCounter, 15121 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 16498 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:58,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 16498 Invalid, 3035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-29 00:59:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2023-11-29 00:59:58,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3689. [2023-11-29 00:59:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3010 states have (on average 1.867109634551495) internal successors, (5620), 3650 states have internal predecessors, (5620), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 00:59:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5701 transitions. [2023-11-29 00:59:58,128 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5701 transitions. Word has length 76 [2023-11-29 00:59:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:58,129 INFO L495 AbstractCegarLoop]: Abstraction has 3689 states and 5701 transitions. [2023-11-29 00:59:58,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:59:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5701 transitions. [2023-11-29 00:59:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 00:59:58,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:58,130 INFO L195 NwaCegarLoop]: trace histogram [22, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:58,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 00:59:58,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:59:58,330 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 00:59:58,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:58,331 INFO L85 PathProgramCache]: Analyzing trace with hash -451492294, now seen corresponding path program 4 times [2023-11-29 00:59:58,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:59:58,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890265536] [2023-11-29 00:59:58,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:59:58,332 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 [2023-11-29 00:59:58,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:59:58,333 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:59:58,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 00:59:58,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:59:58,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:59:58,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:59:58,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:59,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:00:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:00,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:00:00,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890265536] [2023-11-29 01:00:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890265536] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:00:00,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:00:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-29 01:00:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221901488] [2023-11-29 01:00:00,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:00:00,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 01:00:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:00:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 01:00:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 01:00:00,934 INFO L87 Difference]: Start difference. First operand 3689 states and 5701 transitions. Second operand has 50 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 50 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:00:21,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:00:21,864 INFO L93 Difference]: Finished difference Result 3745 states and 5869 transitions. [2023-11-29 01:00:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-29 01:00:21,865 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 50 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2023-11-29 01:00:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:00:21,874 INFO L225 Difference]: With dead ends: 3745 [2023-11-29 01:00:21,874 INFO L226 Difference]: Without dead ends: 3743 [2023-11-29 01:00:21,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1342 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3742, Invalid=9140, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 01:00:21,879 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 47 mSDsluCounter, 34421 mSDsCounter, 0 mSdLazyCounter, 7508 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 35800 SdHoareTripleChecker+Invalid, 7646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 7508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:00:21,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 35800 Invalid, 7646 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [138 Valid, 7508 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2023-11-29 01:00:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2023-11-29 01:00:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3723. [2023-11-29 01:00:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3044 states have (on average 1.8613666228646517) internal successors, (5666), 3684 states have internal predecessors, (5666), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:00:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 5747 transitions. [2023-11-29 01:00:21,927 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 5747 transitions. Word has length 88 [2023-11-29 01:00:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:00:21,927 INFO L495 AbstractCegarLoop]: Abstraction has 3723 states and 5747 transitions. [2023-11-29 01:00:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 50 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:00:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 5747 transitions. [2023-11-29 01:00:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 01:00:21,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:00:21,929 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:00:21,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-29 01:00:22,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:00:22,129 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:00:22,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:00:22,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1698164390, now seen corresponding path program 5 times [2023-11-29 01:00:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:00:22,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092728960] [2023-11-29 01:00:22,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:00:22,131 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 [2023-11-29 01:00:22,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:00:22,132 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:00:22,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 01:00:23,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 01:00:23,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:00:23,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 01:00:23,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:00:23,904 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 [2023-11-29 01:00:24,039 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:00:24,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:00:24,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:00:24,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:00:25,247 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:00:25,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:00:25,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:00:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:00:25,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:00:25,735 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2587 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_2587) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:00:25,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:00:25,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092728960] [2023-11-29 01:00:25,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092728960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:00:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [642879710] [2023-11-29 01:00:25,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:00:25,738 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:00:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:00:25,739 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:00:25,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-11-29 01:01:31,833 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 01:01:31,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:32,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 01:01:32,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:32,093 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 [2023-11-29 01:01:32,381 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:01:32,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:01:32,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:01:32,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 01:01:33,527 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:01:33,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:01:33,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 01:01:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:01:33,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [642879710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:38,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:01:38,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-29 01:01:38,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565292863] [2023-11-29 01:01:38,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:01:38,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:01:38,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:01:38,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=187, Unknown=2, NotChecked=28, Total=272 [2023-11-29 01:01:38,052 INFO L87 Difference]: Start difference. First operand 3723 states and 5747 transitions. Second operand has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:01:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:56,577 INFO L93 Difference]: Finished difference Result 7594 states and 11901 transitions. [2023-11-29 01:01:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:01:56,578 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2023-11-29 01:01:56,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:56,590 INFO L225 Difference]: With dead ends: 7594 [2023-11-29 01:01:56,590 INFO L226 Difference]: Without dead ends: 7592 [2023-11-29 01:01:56,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=64, Invalid=210, Unknown=2, NotChecked=30, Total=306 [2023-11-29 01:01:56,591 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 3775 mSDsluCounter, 5652 mSDsCounter, 0 mSdLazyCounter, 6265 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3791 SdHoareTripleChecker+Valid, 6470 SdHoareTripleChecker+Invalid, 6296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:56,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3791 Valid, 6470 Invalid, 6296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 6265 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-11-29 01:01:56,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2023-11-29 01:01:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 3769. [2023-11-29 01:01:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3769 states, 3090 states have (on average 1.8478964401294498) internal successors, (5710), 3729 states have internal predecessors, (5710), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:01:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 5791 transitions. [2023-11-29 01:01:56,653 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 5791 transitions. Word has length 110 [2023-11-29 01:01:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:56,654 INFO L495 AbstractCegarLoop]: Abstraction has 3769 states and 5791 transitions. [2023-11-29 01:01:56,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:01:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 5791 transitions. [2023-11-29 01:01:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 01:01:56,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:56,654 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:56,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-11-29 01:01:56,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-11-29 01:01:57,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:01:57,055 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:01:57,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1698164389, now seen corresponding path program 1 times [2023-11-29 01:01:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:01:57,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622886429] [2023-11-29 01:01:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:57,057 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 [2023-11-29 01:01:57,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:01:57,058 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:01:57,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 01:01:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:57,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 108 conjunts are in the unsatisfiable core [2023-11-29 01:01:57,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:57,897 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 [2023-11-29 01:01:58,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:01:58,070 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:01:58,071 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 [2023-11-29 01:01:58,105 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 13 treesize of output 9 [2023-11-29 01:01:58,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:01:58,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:01:58,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:01:59,155 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:01:59,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:01:59,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:01:59,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:01:59,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:01:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:01:59,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:00,824 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3602 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3603 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2023-11-29 01:02:00,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:02:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622886429] [2023-11-29 01:02:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622886429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:00,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [827098266] [2023-11-29 01:02:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:00,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:02:00,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:02:00,833 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:02:00,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-11-29 01:03:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:52,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-29 01:03:52,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:52,745 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 [2023-11-29 01:03:53,082 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 [2023-11-29 01:03:53,104 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:03:53,104 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 [2023-11-29 01:03:53,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:03:53,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:03:53,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:03:53,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 01:03:54,231 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:03:54,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:03:54,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:03:54,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:03:54,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 01:03:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:03:54,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:03:55,933 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4157) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_4157 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4156 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4157) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4156) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:03:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [827098266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:55,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:03:55,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-29 01:03:55,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056957630] [2023-11-29 01:03:55,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:03:55,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:03:55,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:03:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:03:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=172, Unknown=2, NotChecked=54, Total=272 [2023-11-29 01:03:55,942 INFO L87 Difference]: Start difference. First operand 3769 states and 5791 transitions. Second operand has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:04:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:20,600 INFO L93 Difference]: Finished difference Result 7591 states and 11894 transitions. [2023-11-29 01:04:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:04:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2023-11-29 01:04:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:20,612 INFO L225 Difference]: With dead ends: 7591 [2023-11-29 01:04:20,612 INFO L226 Difference]: Without dead ends: 7591 [2023-11-29 01:04:20,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 208 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=271, Unknown=2, NotChecked=70, Total=420 [2023-11-29 01:04:20,613 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 2450 mSDsluCounter, 4170 mSDsCounter, 0 mSdLazyCounter, 8486 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 4987 SdHoareTripleChecker+Invalid, 8506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 8486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:20,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 4987 Invalid, 8506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 8486 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time] [2023-11-29 01:04:20,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7591 states. [2023-11-29 01:04:20,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7591 to 3768. [2023-11-29 01:04:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3090 states have (on average 1.8469255663430422) internal successors, (5707), 3728 states have internal predecessors, (5707), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:04:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5788 transitions. [2023-11-29 01:04:20,684 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5788 transitions. Word has length 110 [2023-11-29 01:04:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:20,684 INFO L495 AbstractCegarLoop]: Abstraction has 3768 states and 5788 transitions. [2023-11-29 01:04:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:04:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5788 transitions. [2023-11-29 01:04:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 01:04:20,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:20,686 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:20,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2023-11-29 01:04:20,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-11-29 01:04:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:04:21,087 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:04:21,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash 154672853, now seen corresponding path program 1 times [2023-11-29 01:04:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:04:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488050248] [2023-11-29 01:04:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:21,089 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 [2023-11-29 01:04:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:04:21,090 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:04:21,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 01:04:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:21,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 01:04:21,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:21,980 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 [2023-11-29 01:04:22,144 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:04:22,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:04:22,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:04:22,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:04:23,353 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:04:23,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:04:23,506 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:04:23,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:04:23,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:04:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:04:23,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:24,557 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4580 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4580) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2023-11-29 01:04:25,096 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4580 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4626))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4580)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:04:25,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:04:25,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488050248] [2023-11-29 01:04:25,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488050248] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:25,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [500741866] [2023-11-29 01:04:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:25,100 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:04:25,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:04:25,101 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:04:25,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-11-29 01:04:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:29,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 01:04:29,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:29,102 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 [2023-11-29 01:04:29,496 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:04:29,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:04:29,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:04:29,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 01:04:30,816 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:04:30,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:04:31,002 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:04:31,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:04:31,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 01:04:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:04:31,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:34,839 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4580 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5096))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4580)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:04:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [500741866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:34,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:34,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 01:04:34,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649562051] [2023-11-29 01:04:34,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:34,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:04:34,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:04:34,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:04:34,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=240, Unknown=5, NotChecked=102, Total=420 [2023-11-29 01:04:34,845 INFO L87 Difference]: Start difference. First operand 3768 states and 5788 transitions. Second operand has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:04:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:55,618 INFO L93 Difference]: Finished difference Result 7590 states and 11891 transitions. [2023-11-29 01:04:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:04:55,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 112 [2023-11-29 01:04:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:55,631 INFO L225 Difference]: With dead ends: 7590 [2023-11-29 01:04:55,631 INFO L226 Difference]: Without dead ends: 7590 [2023-11-29 01:04:55,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=82, Invalid=267, Unknown=5, NotChecked=108, Total=462 [2023-11-29 01:04:55,632 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 3766 mSDsluCounter, 7202 mSDsCounter, 0 mSdLazyCounter, 7755 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3782 SdHoareTripleChecker+Valid, 8018 SdHoareTripleChecker+Invalid, 7786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 7755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:55,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3782 Valid, 8018 Invalid, 7786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 7755 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2023-11-29 01:04:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2023-11-29 01:04:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 3767. [2023-11-29 01:04:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3090 states have (on average 1.8459546925566344) internal successors, (5704), 3727 states have internal predecessors, (5704), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:04:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 5785 transitions. [2023-11-29 01:04:55,694 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 5785 transitions. Word has length 112 [2023-11-29 01:04:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:55,694 INFO L495 AbstractCegarLoop]: Abstraction has 3767 states and 5785 transitions. [2023-11-29 01:04:55,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:04:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 5785 transitions. [2023-11-29 01:04:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 01:04:55,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:55,696 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:55,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-11-29 01:04:55,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-11-29 01:04:56,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:04:56,097 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:04:56,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:56,098 INFO L85 PathProgramCache]: Analyzing trace with hash 154672854, now seen corresponding path program 1 times [2023-11-29 01:04:56,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:04:56,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826292720] [2023-11-29 01:04:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:56,099 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 [2023-11-29 01:04:56,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:04:56,100 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:04:56,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-11-29 01:04:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:57,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-29 01:04:57,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:57,113 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 [2023-11-29 01:04:57,250 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:04:57,250 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 [2023-11-29 01:04:57,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:04:57,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:04:57,300 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 13 treesize of output 9 [2023-11-29 01:04:57,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:04:57,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:04:58,269 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:04:58,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:04:58,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:04:58,428 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:04:58,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:04:58,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:04:58,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:04:58,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:04:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:04:58,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:58,675 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5565 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5566 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5565) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-11-29 01:04:58,717 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5565 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5566 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_5565) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:05:00,316 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5657 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5657) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5658) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5657 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5565 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5658))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5657) .cse2 v_ArrVal_5566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5565) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:05:00,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:05:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826292720] [2023-11-29 01:05:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826292720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1229558821] [2023-11-29 01:05:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:00,331 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:05:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:05:00,332 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:05:00,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-11-29 01:07:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:04,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-29 01:07:04,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:04,464 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 [2023-11-29 01:07:04,824 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:07:04,824 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 [2023-11-29 01:07:04,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:07:04,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:07:04,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:05,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:07:05,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 01:07:05,914 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:07:05,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:07:05,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:07:06,129 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:07:06,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:07:06,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:07:06,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:07:06,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 01:07:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:07:06,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:06,228 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6128 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6128) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-11-29 01:07:06,272 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6128 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6128) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:07:07,845 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6219 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6220 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6219) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6220) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6219 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6128 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6220 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6220))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6219) .cse2 v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6128) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:07:07,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1229558821] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:07:07,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:07,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 01:07:07,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760247649] [2023-11-29 01:07:07,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:07,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:07:07,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:07:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:07:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=228, Unknown=6, NotChecked=210, Total=506 [2023-11-29 01:07:07,859 INFO L87 Difference]: Start difference. First operand 3767 states and 5785 transitions. Second operand has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:07:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:33,922 INFO L93 Difference]: Finished difference Result 7589 states and 11888 transitions. [2023-11-29 01:07:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:07:33,923 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 112 [2023-11-29 01:07:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:33,937 INFO L225 Difference]: With dead ends: 7589 [2023-11-29 01:07:33,937 INFO L226 Difference]: Without dead ends: 7589 [2023-11-29 01:07:33,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=375, Unknown=6, NotChecked=270, Total=756 [2023-11-29 01:07:33,938 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 3781 mSDsluCounter, 4288 mSDsCounter, 0 mSdLazyCounter, 9349 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3797 SdHoareTripleChecker+Valid, 5104 SdHoareTripleChecker+Invalid, 9386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:33,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3797 Valid, 5104 Invalid, 9386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 9349 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2023-11-29 01:07:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2023-11-29 01:07:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 3766. [2023-11-29 01:07:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3090 states have (on average 1.8449838187702265) internal successors, (5701), 3726 states have internal predecessors, (5701), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:07:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5782 transitions. [2023-11-29 01:07:34,017 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5782 transitions. Word has length 112 [2023-11-29 01:07:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:34,017 INFO L495 AbstractCegarLoop]: Abstraction has 3766 states and 5782 transitions. [2023-11-29 01:07:34,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:07:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5782 transitions. [2023-11-29 01:07:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 01:07:34,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:34,018 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:34,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-11-29 01:07:34,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-11-29 01:07:34,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:07:34,419 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:07:34,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1680170006, now seen corresponding path program 1 times [2023-11-29 01:07:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:07:34,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408254837] [2023-11-29 01:07:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:34,420 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 [2023-11-29 01:07:34,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:07:34,421 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:07:34,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-29 01:07:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:35,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 01:07:35,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:35,540 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 [2023-11-29 01:07:35,691 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:07:35,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:07:35,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:07:35,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:07:36,920 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:07:36,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:07:37,064 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:07:37,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:07:37,168 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:07:37,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:07:37,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:07:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:07:37,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:41,374 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6659 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6659) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 01:07:41,390 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6659 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6658))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6659)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 01:07:41,406 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6659 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6658))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6659)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:07:41,888 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6659 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6705))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6658)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6659)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:07:41,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:07:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408254837] [2023-11-29 01:07:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408254837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:07:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2073770495] [2023-11-29 01:07:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:41,893 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:07:41,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:07:41,894 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:07:41,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2023-11-29 01:08:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:09,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 01:08:09,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:09,603 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 [2023-11-29 01:08:10,019 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:08:10,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:08:10,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:08:10,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 01:08:11,278 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:08:11,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:08:11,497 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:08:11,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:08:11,623 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:08:11,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:08:11,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 01:08:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:08:11,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:15,748 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6659 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7143))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6659)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:08:15,764 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6659 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7143))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6659)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:08:16,212 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7190 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7190))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7143)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6659)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:08:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2073770495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:16,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:08:16,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-29 01:08:16,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496495283] [2023-11-29 01:08:16,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:16,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:08:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:08:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:08:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=307, Unknown=8, NotChecked=294, Total=702 [2023-11-29 01:08:16,218 INFO L87 Difference]: Start difference. First operand 3766 states and 5782 transitions. Second operand has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:08:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:35,933 INFO L93 Difference]: Finished difference Result 7588 states and 11885 transitions. [2023-11-29 01:08:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:08:35,934 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 114 [2023-11-29 01:08:35,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:35,943 INFO L225 Difference]: With dead ends: 7588 [2023-11-29 01:08:35,943 INFO L226 Difference]: Without dead ends: 7588 [2023-11-29 01:08:35,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 213 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=102, Invalid=338, Unknown=8, NotChecked=308, Total=756 [2023-11-29 01:08:35,944 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 3760 mSDsluCounter, 6535 mSDsCounter, 0 mSdLazyCounter, 7093 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 7349 SdHoareTripleChecker+Invalid, 7125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:35,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3776 Valid, 7349 Invalid, 7125 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 7093 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2023-11-29 01:08:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2023-11-29 01:08:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 3765. [2023-11-29 01:08:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3090 states have (on average 1.8440129449838187) internal successors, (5698), 3725 states have internal predecessors, (5698), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:08:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 5779 transitions. [2023-11-29 01:08:35,996 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 5779 transitions. Word has length 114 [2023-11-29 01:08:35,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:35,996 INFO L495 AbstractCegarLoop]: Abstraction has 3765 states and 5779 transitions. [2023-11-29 01:08:35,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:08:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 5779 transitions. [2023-11-29 01:08:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 01:08:35,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:35,997 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:36,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-11-29 01:08:36,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2023-11-29 01:08:36,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:08:36,398 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:08:36,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1680170005, now seen corresponding path program 1 times [2023-11-29 01:08:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:08:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342651011] [2023-11-29 01:08:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:36,399 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 [2023-11-29 01:08:36,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:08:36,400 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:08:36,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-11-29 01:08:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:37,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 115 conjunts are in the unsatisfiable core [2023-11-29 01:08:37,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:37,586 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 [2023-11-29 01:08:37,734 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 [2023-11-29 01:08:37,749 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:08:37,749 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 [2023-11-29 01:08:37,783 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 13 treesize of output 9 [2023-11-29 01:08:37,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:08:37,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:08:37,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:08:38,705 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:08:38,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:08:38,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:08:38,867 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:08:38,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:08:38,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:08:38,991 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:08:38,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:08:39,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:08:39,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:08:39,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:08:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:08:39,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:39,279 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7676 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_7676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 01:08:39,319 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7676 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:08:39,365 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7676 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7674 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7675))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7674) .cse0 v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7674 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7674) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7675) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-11-29 01:08:39,415 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7676 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7674 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7675))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7674) .cse1 v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7674 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7674) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7675) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-11-29 01:08:41,872 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7769 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7768 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7674 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7769))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7768) .cse1 v_ArrVal_7674) (select (select (store .cse2 .cse1 v_ArrVal_7675) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7677))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7769 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7768 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7676 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7675 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7674 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7769))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7675))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7768) .cse4 v_ArrVal_7674) .cse5 v_ArrVal_7677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 01:08:41,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:08:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342651011] [2023-11-29 01:08:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342651011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [823975689] [2023-11-29 01:08:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:41,892 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:08:41,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:08:41,893 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:08:41,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2023-11-29 01:09:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:27,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 117 conjunts are in the unsatisfiable core [2023-11-29 01:09:27,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:27,655 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 [2023-11-29 01:09:28,203 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 [2023-11-29 01:09:28,229 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:09:28,229 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 [2023-11-29 01:09:28,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:09:28,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:09:28,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:09:28,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 01:09:29,674 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:09:29,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:09:29,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:09:29,966 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:09:29,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:09:29,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:09:30,152 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:09:30,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:09:30,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:09:30,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:09:30,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 01:09:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:09:30,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:30,282 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8255 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_8255) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 01:09:30,328 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8255 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8255) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:09:30,442 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8254 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8253 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8254) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8254 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8253 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8255 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8253))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8254) .cse2 v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8255) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:09:30,642 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8254 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8253 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8255 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8253))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8254) .cse1 v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8255) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8254 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8253 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8254) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-11-29 01:09:33,374 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8254 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8253 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8347 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8347))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8348) .cse1 v_ArrVal_8254) (select (select (store .cse2 .cse1 v_ArrVal_8253) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8256))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8254 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8253 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8347 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8255 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8347))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8253))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8348) .cse4 v_ArrVal_8254) .cse5 v_ArrVal_8256) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8255) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 01:09:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [823975689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:33,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:09:33,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-29 01:09:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77525081] [2023-11-29 01:09:33,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:33,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:09:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:09:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:09:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=292, Unknown=10, NotChecked=430, Total=812 [2023-11-29 01:09:33,399 INFO L87 Difference]: Start difference. First operand 3765 states and 5779 transitions. Second operand has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:10:11,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:10:11,764 INFO L93 Difference]: Finished difference Result 7587 states and 11882 transitions. [2023-11-29 01:10:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:10:11,765 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 114 [2023-11-29 01:10:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:10:11,772 INFO L225 Difference]: With dead ends: 7587 [2023-11-29 01:10:11,772 INFO L226 Difference]: Without dead ends: 7587 [2023-11-29 01:10:11,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=133, Invalid=497, Unknown=10, NotChecked=550, Total=1190 [2023-11-29 01:10:11,773 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 2440 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 10636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 5942 SdHoareTripleChecker+Invalid, 10653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 10636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:10:11,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 5942 Invalid, 10653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 10636 Invalid, 0 Unknown, 0 Unchecked, 37.6s Time] [2023-11-29 01:10:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7587 states. [2023-11-29 01:10:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7587 to 3764. [2023-11-29 01:10:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3090 states have (on average 1.843042071197411) internal successors, (5695), 3724 states have internal predecessors, (5695), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:10:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 5776 transitions. [2023-11-29 01:10:11,821 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 5776 transitions. Word has length 114 [2023-11-29 01:10:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:10:11,821 INFO L495 AbstractCegarLoop]: Abstraction has 3764 states and 5776 transitions. [2023-11-29 01:10:11,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:10:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 5776 transitions. [2023-11-29 01:10:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:10:11,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:10:11,822 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:10:11,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2023-11-29 01:10:12,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-11-29 01:10:12,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:10:12,222 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:10:12,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 267396570, now seen corresponding path program 1 times [2023-11-29 01:10:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:10:12,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570415273] [2023-11-29 01:10:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:12,224 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 [2023-11-29 01:10:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:10:12,224 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:10:12,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-11-29 01:10:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:13,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:10:13,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:13,477 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 [2023-11-29 01:10:13,724 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:10:13,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:10:13,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:10:13,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:10:15,309 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:10:15,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:10:15,520 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:10:15,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:10:15,666 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:10:15,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:10:15,817 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:10:15,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:10:15,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:10:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:10:15,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:10:16,014 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8803 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_8803) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:10:16,033 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8803 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8803) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 01:10:16,054 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8803 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8802 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_8802))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8803)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:10:16,082 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8803 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8802 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8802))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8803)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:10:16,106 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8803 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8802 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8801 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8801))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8802)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8803)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:10:16,133 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8803 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8802 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8801 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8801))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8802)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8803)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:10:16,675 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8803 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8802 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8801 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8849))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8801)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8802)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8803)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:10:16,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:10:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570415273] [2023-11-29 01:10:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570415273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:10:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [671294043] [2023-11-29 01:10:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:16,682 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:10:16,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:10:16,683 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:10:16,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2023-11-29 01:10:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:57,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-29 01:10:57,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:57,208 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 [2023-11-29 01:10:57,814 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:10:57,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:10:57,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:10:58,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 01:10:59,464 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:10:59,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:10:59,757 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:10:59,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:10:59,938 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:10:59,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:11:00,110 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:11:00,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 01:11:00,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 01:11:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:11:00,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:00,174 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9305 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_9305) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:11:00,192 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9305 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9305) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-11-29 01:11:00,212 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9304 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9304))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9305)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:11:00,232 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9304 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9304))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9305)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:11:00,255 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9304 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9303 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9303))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9304)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9305)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:11:00,287 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9304 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9303 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9303))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9304)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9305)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 01:11:00,808 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9304 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9303 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9351))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9303)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9304)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9305)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:11:00,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [671294043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:00,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:00,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-11-29 01:11:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644499211] [2023-11-29 01:11:00,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:11:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:11:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:11:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=14, NotChecked=714, Total=1190 [2023-11-29 01:11:00,817 INFO L87 Difference]: Start difference. First operand 3764 states and 5776 transitions. Second operand has 19 states, 16 states have (on average 8.5) internal successors, (136), 19 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:11:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:34,846 INFO L93 Difference]: Finished difference Result 7586 states and 11879 transitions. [2023-11-29 01:11:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:11:34,846 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.5) internal successors, (136), 19 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 116 [2023-11-29 01:11:34,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:34,853 INFO L225 Difference]: With dead ends: 7586 [2023-11-29 01:11:34,853 INFO L226 Difference]: Without dead ends: 7586 [2023-11-29 01:11:34,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=379, Unknown=14, NotChecked=742, Total=1260 [2023-11-29 01:11:34,854 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 3750 mSDsluCounter, 9388 mSDsCounter, 0 mSdLazyCounter, 9994 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3766 SdHoareTripleChecker+Valid, 10201 SdHoareTripleChecker+Invalid, 10025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 9994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:34,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3766 Valid, 10201 Invalid, 10025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 9994 Invalid, 0 Unknown, 0 Unchecked, 33.6s Time] [2023-11-29 01:11:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2023-11-29 01:11:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 3763. [2023-11-29 01:11:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3090 states have (on average 1.8420711974110033) internal successors, (5692), 3723 states have internal predecessors, (5692), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-11-29 01:11:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5773 transitions. [2023-11-29 01:11:34,897 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5773 transitions. Word has length 116 [2023-11-29 01:11:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:34,897 INFO L495 AbstractCegarLoop]: Abstraction has 3763 states and 5773 transitions. [2023-11-29 01:11:34,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.5) internal successors, (136), 19 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:11:34,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5773 transitions. [2023-11-29 01:11:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:11:34,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:34,898 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:34,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:35,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:35,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:11:35,299 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-29 01:11:35,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:35,299 INFO L85 PathProgramCache]: Analyzing trace with hash 267396571, now seen corresponding path program 1 times [2023-11-29 01:11:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:11:35,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748678996] [2023-11-29 01:11:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:35,300 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 [2023-11-29 01:11:35,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:11:35,301 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 01:11:35,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-11-29 01:11:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:36,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 117 conjunts are in the unsatisfiable core [2023-11-29 01:11:36,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:36,593 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 [2023-11-29 01:11:36,824 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 [2023-11-29 01:11:36,848 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:11:36,848 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 [2023-11-29 01:11:36,891 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 13 treesize of output 9 [2023-11-29 01:11:36,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:11:37,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:11:37,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:11:38,206 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:11:38,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:11:38,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:11:38,408 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:11:38,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:11:38,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:11:38,575 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:11:38,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:11:38,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:11:38,741 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:11:38,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:11:38,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:11:38,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:11:38,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 01:11:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:11:38,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:39,098 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_9855) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv20 32)) (bvadd .cse1 (_ bv24 32))))))) is different from false [2023-11-29 01:11:39,143 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_9855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_9855) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:11:39,231 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9852) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9853) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_9855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9853))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9852) .cse2 v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_9855) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:11:39,293 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_9853))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_9852) .cse1 v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9855) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_9852) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_9853) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-11-29 01:11:39,971 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9850))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9851) .cse1 v_ArrVal_9852) (select (select (store .cse2 .cse1 v_ArrVal_9853) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9854))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9850))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_9853))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9851) .cse4 v_ArrVal_9852) .cse5 v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_9855) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 01:11:40,268 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_9855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_9850))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_9853))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_9851) .cse1 v_ArrVal_9852) .cse2 v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_9855) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_9850))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_9851) .cse7 v_ArrVal_9852) (select (select (store .cse8 .cse7 v_ArrVal_9853) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9854))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2023-11-29 01:11:46,131 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9946))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_9850))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9947) .cse1 v_ArrVal_9851) .cse2 v_ArrVal_9852) (select (select (store .cse3 .cse2 v_ArrVal_9853) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9854))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9946))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_9850))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_9853))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9947) .cse6 v_ArrVal_9851) .cse7 v_ArrVal_9852) .cse8 v_ArrVal_9854) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_9855) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2023-11-29 01:11:46,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:11:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748678996] [2023-11-29 01:11:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748678996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [258393330] [2023-11-29 01:11:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:46,167 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:11:46,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:11:46,168 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:11:46,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecac7bdb-41cd-45c8-a82f-de3a2351faae/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process