./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff 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_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b879d991ca85089954916015c9838d386a5c85365dad0e09e537aeb772eaaaf8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:06,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:07,115 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-19 07:45:07,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:07,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:07,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:07,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:07,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:07,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:07,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:07,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:07,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:07,163 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:07,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:07,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:07,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:07,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:07,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:07,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:07,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:07,173 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:07,173 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:07,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:07,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:07,175 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:07,175 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:07,175 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:07,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:07,176 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:07,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:07,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:07,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:07,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:07,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:07,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:07,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:07,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:07,180 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:07,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:07,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:07,181 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:07,181 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_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b879d991ca85089954916015c9838d386a5c85365dad0e09e537aeb772eaaaf8 [2023-11-19 07:45:07,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:07,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:07,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:07,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:07,481 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:07,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i [2023-11-19 07:45:10,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:11,252 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:11,252 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i [2023-11-19 07:45:11,282 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data/6faa4eda6/c1d0855b539f4f48884c53545e92cd82/FLAG517e7a1c7 [2023-11-19 07:45:11,300 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data/6faa4eda6/c1d0855b539f4f48884c53545e92cd82 [2023-11-19 07:45:11,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:11,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:11,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:11,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:11,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:11,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2ed408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11, skipping insertion in model container [2023-11-19 07:45:11,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,394 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:12,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:12,188 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) [2023-11-19 07:45:12,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@397373a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:12, skipping insertion in model container [2023-11-19 07:45:12,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:12,189 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:45:12,191 INFO L158 Benchmark]: Toolchain (without parser) took 886.02ms. Allocated memory is still 132.1MB. Free memory was 100.7MB in the beginning and 80.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:45:12,192 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory was 60.8MB in the beginning and 60.7MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:45:12,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 883.61ms. Allocated memory is still 132.1MB. Free memory was 100.4MB in the beginning and 80.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:45:12,195 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory was 60.8MB in the beginning and 60.7MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 883.61ms. Allocated memory is still 132.1MB. Free memory was 100.4MB in the beginning and 80.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b879d991ca85089954916015c9838d386a5c85365dad0e09e537aeb772eaaaf8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:14,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:14,949 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-19 07:45:14,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:14,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:15,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:15,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:15,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:15,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:15,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:15,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:15,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:15,014 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:15,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:15,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:15,018 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:15,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:15,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:15,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:15,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:15,021 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:15,021 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:15,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:15,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:15,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:15,023 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:45:15,024 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:45:15,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:15,024 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:15,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:15,026 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:15,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:15,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:15,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:15,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:15,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:15,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:15,029 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:45:15,029 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:45:15,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:15,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:15,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:15,031 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:45:15,031 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:15,032 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_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b879d991ca85089954916015c9838d386a5c85365dad0e09e537aeb772eaaaf8 [2023-11-19 07:45:15,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:15,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:15,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:15,532 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:15,532 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:15,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i [2023-11-19 07:45:18,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:19,248 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:19,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i [2023-11-19 07:45:19,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data/0dc652461/0a6595b1edb3472dbdf33b32aee8cb88/FLAG9f7edc159 [2023-11-19 07:45:19,309 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/data/0dc652461/0a6595b1edb3472dbdf33b32aee8cb88 [2023-11-19 07:45:19,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:19,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:19,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:19,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:19,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:19,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:19" (1/1) ... [2023-11-19 07:45:19,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5e2906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:19, skipping insertion in model container [2023-11-19 07:45:19,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:19" (1/1) ... [2023-11-19 07:45:19,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:20,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:20,178 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:45:20,192 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:20,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:20,281 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:20,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:20,515 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:20,523 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:20,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20 WrapperNode [2023-11-19 07:45:20,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:20,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:20,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:20,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:20,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,651 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1045 [2023-11-19 07:45:20,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:20,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:20,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:20,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:20,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:20,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:20,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:20,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:20,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (1/1) ... [2023-11-19 07:45:20,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:20,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:20,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 07:45:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 07:45:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 07:45:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:45:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:45:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:45:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 07:45:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:45:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:45:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:45:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:45:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:45:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:45:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:45:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:21,164 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:21,167 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:29,287 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:29,304 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:29,305 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-19 07:45:29,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:29 BoogieIcfgContainer [2023-11-19 07:45:29,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:29,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:29,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:29,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:29,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:19" (1/3) ... [2023-11-19 07:45:29,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217afa09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:29, skipping insertion in model container [2023-11-19 07:45:29,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:20" (2/3) ... [2023-11-19 07:45:29,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217afa09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:29, skipping insertion in model container [2023-11-19 07:45:29,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:29" (3/3) ... [2023-11-19 07:45:29,330 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test2-2.i [2023-11-19 07:45:29,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:29,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:45:29,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:29,427 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;@44982c23, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:29,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:45:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 201 states have (on average 1.6616915422885572) internal successors, (334), 210 states have internal predecessors, (334), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:45:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:45:29,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:29,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:29,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:29,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1552170126, now seen corresponding path program 1 times [2023-11-19 07:45:29,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:29,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622842144] [2023-11-19 07:45:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:29,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:29,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:29,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:29,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:29,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:45:29,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:29,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:29,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:29,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622842144] [2023-11-19 07:45:29,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622842144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:29,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:29,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075426806] [2023-11-19 07:45:29,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:29,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:29,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:29,868 INFO L87 Difference]: Start difference. First operand has 217 states, 201 states have (on average 1.6616915422885572) internal successors, (334), 210 states have internal predecessors, (334), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:29,932 INFO L93 Difference]: Finished difference Result 215 states and 282 transitions. [2023-11-19 07:45:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:29,934 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 07:45:29,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:29,948 INFO L225 Difference]: With dead ends: 215 [2023-11-19 07:45:29,949 INFO L226 Difference]: Without dead ends: 213 [2023-11-19 07:45:29,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:29,954 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:29,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-19 07:45:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-19 07:45:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 199 states have (on average 1.3165829145728642) internal successors, (262), 206 states have internal predecessors, (262), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:45:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2023-11-19 07:45:30,049 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 11 [2023-11-19 07:45:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:30,050 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2023-11-19 07:45:30,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2023-11-19 07:45:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:45:30,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:30,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:30,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:30,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:30,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:30,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2024921328, now seen corresponding path program 1 times [2023-11-19 07:45:30,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:30,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633121094] [2023-11-19 07:45:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:30,257 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 [2023-11-19 07:45:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:30,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:30,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:30,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:45:30,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:30,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:30,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:30,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633121094] [2023-11-19 07:45:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633121094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:30,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:30,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027621029] [2023-11-19 07:45:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:30,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:30,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:30,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:30,642 INFO L87 Difference]: Start difference. First operand 213 states and 280 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 07:45:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:31,725 INFO L93 Difference]: Finished difference Result 345 states and 458 transitions. [2023-11-19 07:45:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-11-19 07:45:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:31,730 INFO L225 Difference]: With dead ends: 345 [2023-11-19 07:45:31,731 INFO L226 Difference]: Without dead ends: 345 [2023-11-19 07:45:31,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:31,733 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 165 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:31,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 514 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:45:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-19 07:45:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 313. [2023-11-19 07:45:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 294 states have (on average 1.3231292517006803) internal successors, (389), 306 states have internal predecessors, (389), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:45:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 417 transitions. [2023-11-19 07:45:31,761 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 417 transitions. Word has length 13 [2023-11-19 07:45:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:31,761 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 417 transitions. [2023-11-19 07:45:31,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 07:45:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 417 transitions. [2023-11-19 07:45:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:45:31,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:31,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:31,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:31,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:31,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2023074286, now seen corresponding path program 1 times [2023-11-19 07:45:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097795560] [2023-11-19 07:45:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:31,970 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 [2023-11-19 07:45:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:31,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:31,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:32,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:32,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:32,258 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:45:32,259 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:45:32,260 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:45:32,273 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 [2023-11-19 07:45:32,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:45:32,375 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 [2023-11-19 07:45:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:32,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:32,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:32,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097795560] [2023-11-19 07:45:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097795560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:32,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:32,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:32,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523211307] [2023-11-19 07:45:32,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:32,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:32,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:32,414 INFO L87 Difference]: Start difference. First operand 313 states and 417 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-19 07:45:37,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:41,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:42,011 INFO L93 Difference]: Finished difference Result 427 states and 580 transitions. [2023-11-19 07:45:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:42,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-19 07:45:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:42,026 INFO L225 Difference]: With dead ends: 427 [2023-11-19 07:45:42,027 INFO L226 Difference]: Without dead ends: 427 [2023-11-19 07:45:42,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:42,032 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 170 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:42,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 691 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2023-11-19 07:45:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-19 07:45:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 312. [2023-11-19 07:45:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 293 states have (on average 1.3208191126279865) internal successors, (387), 305 states have internal predecessors, (387), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:45:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 415 transitions. [2023-11-19 07:45:42,081 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 415 transitions. Word has length 13 [2023-11-19 07:45:42,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:42,081 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 415 transitions. [2023-11-19 07:45:42,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-19 07:45:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 415 transitions. [2023-11-19 07:45:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 07:45:42,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:42,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:42,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:42,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:42,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:42,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2040803695, now seen corresponding path program 1 times [2023-11-19 07:45:42,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:42,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363484347] [2023-11-19 07:45:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:42,290 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 [2023-11-19 07:45:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:42,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:42,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:45:42,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:45:42,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:42,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363484347] [2023-11-19 07:45:42,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363484347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469946267] [2023-11-19 07:45:42,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:42,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:42,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:42,995 INFO L87 Difference]: Start difference. First operand 312 states and 415 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:45:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:43,183 INFO L93 Difference]: Finished difference Result 320 states and 407 transitions. [2023-11-19 07:45:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:43,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 84 [2023-11-19 07:45:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:43,187 INFO L225 Difference]: With dead ends: 320 [2023-11-19 07:45:43,187 INFO L226 Difference]: Without dead ends: 320 [2023-11-19 07:45:43,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:43,193 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 36 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:43,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 727 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-19 07:45:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2023-11-19 07:45:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 299 states have (on average 1.2608695652173914) internal successors, (377), 311 states have internal predecessors, (377), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:45:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 405 transitions. [2023-11-19 07:45:43,221 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 405 transitions. Word has length 84 [2023-11-19 07:45:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:43,222 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 405 transitions. [2023-11-19 07:45:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:45:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 405 transitions. [2023-11-19 07:45:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 07:45:43,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:43,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:43,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:43,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:43,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:43,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:43,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2023992699, now seen corresponding path program 1 times [2023-11-19 07:45:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654726769] [2023-11-19 07:45:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:43,435 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 [2023-11-19 07:45:43,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:43,436 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:43,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:45:44,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:44,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:44,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:44,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654726769] [2023-11-19 07:45:44,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654726769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:44,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:44,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:44,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289289256] [2023-11-19 07:45:44,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:44,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:44,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:44,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:44,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:44,177 INFO L87 Difference]: Start difference. First operand 318 states and 405 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:44,253 INFO L93 Difference]: Finished difference Result 321 states and 409 transitions. [2023-11-19 07:45:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:44,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2023-11-19 07:45:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:44,258 INFO L225 Difference]: With dead ends: 321 [2023-11-19 07:45:44,258 INFO L226 Difference]: Without dead ends: 321 [2023-11-19 07:45:44,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:44,260 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 2 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:44,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 794 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-19 07:45:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-11-19 07:45:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 301 states have (on average 1.2624584717607974) internal successors, (380), 314 states have internal predecessors, (380), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:45:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 409 transitions. [2023-11-19 07:45:44,274 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 409 transitions. Word has length 84 [2023-11-19 07:45:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:44,275 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 409 transitions. [2023-11-19 07:45:44,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 409 transitions. [2023-11-19 07:45:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 07:45:44,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:44,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:44,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:44,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:44,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:44,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash -552381063, now seen corresponding path program 1 times [2023-11-19 07:45:44,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:44,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185331711] [2023-11-19 07:45:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,491 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 [2023-11-19 07:45:44,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:44,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:44,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:45,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:45:45,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:45,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:45,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185331711] [2023-11-19 07:45:45,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185331711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:45,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:45,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:45:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245558590] [2023-11-19 07:45:45,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:45,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:45:45,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:45:45,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:45:45,408 INFO L87 Difference]: Start difference. First operand 321 states and 409 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:45:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:45,721 INFO L93 Difference]: Finished difference Result 332 states and 425 transitions. [2023-11-19 07:45:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:45:45,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2023-11-19 07:45:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:45,725 INFO L225 Difference]: With dead ends: 332 [2023-11-19 07:45:45,725 INFO L226 Difference]: Without dead ends: 332 [2023-11-19 07:45:45,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:45:45,727 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 8 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:45,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1059 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:45:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-19 07:45:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 330. [2023-11-19 07:45:45,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 322 states have internal predecessors, (394), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:45:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 423 transitions. [2023-11-19 07:45:45,741 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 423 transitions. Word has length 86 [2023-11-19 07:45:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:45,741 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 423 transitions. [2023-11-19 07:45:45,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:45:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 423 transitions. [2023-11-19 07:45:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:45:45,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:45,744 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:45,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:45,956 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:45,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1270077285, now seen corresponding path program 2 times [2023-11-19 07:45:45,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:45,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607063121] [2023-11-19 07:45:45,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:45,958 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 [2023-11-19 07:45:45,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:45,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:45,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:46,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:45:46,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:46,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:45:46,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 07:45:46,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:46,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607063121] [2023-11-19 07:45:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607063121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:46,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:46,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:46,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903688472] [2023-11-19 07:45:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:46,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:46,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:46,414 INFO L87 Difference]: Start difference. First operand 330 states and 423 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:45:49,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:51,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:55,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:57,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:45:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:58,009 INFO L93 Difference]: Finished difference Result 477 states and 621 transitions. [2023-11-19 07:45:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:58,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2023-11-19 07:45:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:58,014 INFO L225 Difference]: With dead ends: 477 [2023-11-19 07:45:58,014 INFO L226 Difference]: Without dead ends: 477 [2023-11-19 07:45:58,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:58,015 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 554 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:58,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 482 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 126 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2023-11-19 07:45:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-19 07:45:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 448. [2023-11-19 07:45:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 421 states have (on average 1.2874109263657958) internal successors, (542), 439 states have internal predecessors, (542), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 7 states have call predecessors, (21), 19 states have call successors, (21) [2023-11-19 07:45:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 584 transitions. [2023-11-19 07:45:58,036 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 584 transitions. Word has length 90 [2023-11-19 07:45:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:58,037 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 584 transitions. [2023-11-19 07:45:58,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:45:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 584 transitions. [2023-11-19 07:45:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:45:58,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:58,039 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:58,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:58,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:45:58,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:45:58,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1965152999, now seen corresponding path program 1 times [2023-11-19 07:45:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:45:58,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735486008] [2023-11-19 07:45:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:58,250 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 [2023-11-19 07:45:58,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:45:58,251 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:45:58,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:45:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:58,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:58,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:45:59,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:45:59,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:45:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735486008] [2023-11-19 07:45:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735486008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:59,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:59,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:45:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349605762] [2023-11-19 07:45:59,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:59,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:45:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:45:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:45:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:45:59,427 INFO L87 Difference]: Start difference. First operand 448 states and 584 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:00,472 INFO L93 Difference]: Finished difference Result 469 states and 616 transitions. [2023-11-19 07:46:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:46:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 100 [2023-11-19 07:46:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:00,476 INFO L225 Difference]: With dead ends: 469 [2023-11-19 07:46:00,477 INFO L226 Difference]: Without dead ends: 465 [2023-11-19 07:46:00,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:46:00,478 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 18 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:00,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2652 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-19 07:46:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 457. [2023-11-19 07:46:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 430 states have (on average 1.2883720930232558) internal successors, (554), 448 states have internal predecessors, (554), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 7 states have call predecessors, (21), 19 states have call successors, (21) [2023-11-19 07:46:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 596 transitions. [2023-11-19 07:46:00,497 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 596 transitions. Word has length 100 [2023-11-19 07:46:00,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:00,497 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 596 transitions. [2023-11-19 07:46:00,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 596 transitions. [2023-11-19 07:46:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 07:46:00,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:00,500 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:00,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:00,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:00,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 07:46:00,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash -344374674, now seen corresponding path program 2 times [2023-11-19 07:46:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48000383] [2023-11-19 07:46:00,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:46:00,713 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 [2023-11-19 07:46:00,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:00,715 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:46:00,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e5708b-6a1f-4908-9ea5-9fae5637e25e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:46:01,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:46:01,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:46:01,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:01,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:01,160 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:46:01,161 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:46:01,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:46:01,166 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 [2023-11-19 07:46:01,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:46:01,298 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 [2023-11-19 07:46:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-19 07:46:01,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:01,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48000383] [2023-11-19 07:46:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48000383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:01,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:01,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837346375] [2023-11-19 07:46:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:01,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:01,339 INFO L87 Difference]: Start difference. First operand 457 states and 596 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:46:03,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:46:06,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []