./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:51:38,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:51:39,069 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:51:39,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:51:39,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:51:39,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:51:39,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:51:39,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:51:39,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:51:39,130 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:51:39,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:51:39,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:51:39,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:51:39,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:51:39,135 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:51:39,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:51:39,136 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:51:39,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:51:39,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:51:39,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:51:39,139 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:51:39,139 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:51:39,140 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:51:39,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:51:39,141 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:51:39,141 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:51:39,142 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:51:39,142 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:51:39,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:51:39,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:51:39,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:51:39,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:51:39,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:51:39,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:51:39,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:51:39,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:51:39,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:51:39,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:51:39,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:51:39,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:51:39,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:51:39,150 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_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2023-11-24 21:51:39,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:51:39,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:51:39,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:51:39,519 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:51:39,519 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:51:39,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2023-11-24 21:51:42,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:51:43,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:51:43,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2023-11-24 21:51:43,057 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data/a3439dba4/42043a6a99b24e4c936dcccc0339421e/FLAG11a3429b9 [2023-11-24 21:51:43,073 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data/a3439dba4/42043a6a99b24e4c936dcccc0339421e [2023-11-24 21:51:43,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:51:43,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:51:43,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:43,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:51:43,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:51:43,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:43" (1/1) ... [2023-11-24 21:51:43,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726c73a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:43, skipping insertion in model container [2023-11-24 21:51:43,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:43" (1/1) ... [2023-11-24 21:51:43,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:51:43,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:43,820 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) [2023-11-24 21:51:43,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1aa473ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:43, skipping insertion in model container [2023-11-24 21:51:43,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:43,821 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:51:43,823 INFO L158 Benchmark]: Toolchain (without parser) took 740.94ms. Allocated memory is still 176.2MB. Free memory was 128.9MB in the beginning and 107.8MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:51:43,824 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:51:43,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.80ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 107.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:51:43,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 736.80ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 107.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: 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_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:51:46,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:51:46,537 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:51:46,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:51:46,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:51:46,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:51:46,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:51:46,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:51:46,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:51:46,586 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:51:46,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:51:46,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:51:46,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:51:46,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:51:46,589 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:51:46,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:51:46,590 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:51:46,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:51:46,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:51:46,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:51:46,592 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:51:46,592 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:51:46,593 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:51:46,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:51:46,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:51:46,594 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:51:46,595 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:51:46,595 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:51:46,596 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:51:46,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:51:46,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:51:46,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:51:46,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:51:46,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:51:46,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:51:46,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:51:46,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:51:46,600 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:51:46,600 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:51:46,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:51:46,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:51:46,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:51:46,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:51:46,603 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:51:46,603 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_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2023-11-24 21:51:47,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:51:47,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:51:47,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:51:47,068 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:51:47,068 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:51:47,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2023-11-24 21:51:50,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:51:50,714 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:51:50,714 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2023-11-24 21:51:50,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data/fae34fb0c/21893e33d183442386d11b377300794d/FLAG3c449b268 [2023-11-24 21:51:50,753 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/data/fae34fb0c/21893e33d183442386d11b377300794d [2023-11-24 21:51:50,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:51:50,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:51:50,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:50,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:51:50,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:51:50,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:50" (1/1) ... [2023-11-24 21:51:50,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a5a7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:50, skipping insertion in model container [2023-11-24 21:51:50,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:50" (1/1) ... [2023-11-24 21:51:50,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:51:51,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:51,736 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:51:51,759 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:51:51,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:51,928 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:51:52,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:52,073 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:51:52,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52 WrapperNode [2023-11-24 21:51:52,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:52,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:51:52,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:51:52,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:51:52,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,267 INFO L138 Inliner]: procedures = 180, calls = 391, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1302 [2023-11-24 21:51:52,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:51:52,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:51:52,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:51:52,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:51:52,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,424 INFO L175 MemorySlicer]: Split 367 memory accesses to 4 slices as follows [2, 355, 5, 5]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 92 writes are split as follows [0, 90, 1, 1]. [2023-11-24 21:51:52,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:51:52,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:51:52,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:51:52,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:51:52,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (1/1) ... [2023-11-24 21:51:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:51:52,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:51:52,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:51:52,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:51:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 21:51:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 21:51:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 21:51:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-24 21:51:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:51:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:51:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-24 21:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-24 21:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-24 21:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-24 21:51:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-24 21:51:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-24 21:51:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-24 21:51:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-24 21:51:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:51:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:51:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:51:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:51:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:51:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:51:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:51:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:51:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:51:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:51:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 21:51:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:51:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:51:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:51:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:51:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:51:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:51:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:51:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:51:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:51:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:51:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:51:52,997 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:51:52,999 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:51:53,004 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:51:53,101 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:51:53,135 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:51:53,167 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:52:00,139 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:52:00,399 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:52:00,400 INFO L309 CfgBuilder]: Removed 69 assume(true) statements. [2023-11-24 21:52:00,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:00 BoogieIcfgContainer [2023-11-24 21:52:00,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:52:00,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:52:00,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:52:00,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:52:00,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:51:50" (1/3) ... [2023-11-24 21:52:00,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776ff7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:00, skipping insertion in model container [2023-11-24 21:52:00,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:52" (2/3) ... [2023-11-24 21:52:00,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776ff7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:00, skipping insertion in model container [2023-11-24 21:52:00,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:00" (3/3) ... [2023-11-24 21:52:00,414 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test4-2.i [2023-11-24 21:52:00,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:52:00,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2023-11-24 21:52:00,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:52:00,539 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;@2cb38102, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:52:00,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2023-11-24 21:52:00,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 1320 states, 565 states have (on average 2.5699115044247787) internal successors, (1452), 1312 states have internal predecessors, (1452), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:52:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:52:00,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:00,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:52:00,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr752ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:00,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2138781, now seen corresponding path program 1 times [2023-11-24 21:52:00,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:00,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89876249] [2023-11-24 21:52:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:00,592 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 [2023-11-24 21:52:00,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:00,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:00,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:00,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:52:00,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:00,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:00,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89876249] [2023-11-24 21:52:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89876249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:00,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:00,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873233097] [2023-11-24 21:52:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:00,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:00,976 INFO L87 Difference]: Start difference. First operand has 1320 states, 565 states have (on average 2.5699115044247787) internal successors, (1452), 1312 states have internal predecessors, (1452), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-24 21:52:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:04,769 INFO L93 Difference]: Finished difference Result 1491 states and 1570 transitions. [2023-11-24 21:52:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:04,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-24 21:52:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:04,797 INFO L225 Difference]: With dead ends: 1491 [2023-11-24 21:52:04,797 INFO L226 Difference]: Without dead ends: 1488 [2023-11-24 21:52:04,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:04,802 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 201 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:04,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1771 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-24 21:52:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-11-24 21:52:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1315. [2023-11-24 21:52:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 571 states have (on average 2.4185639229422065) internal successors, (1381), 1307 states have internal predecessors, (1381), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:52:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1393 transitions. [2023-11-24 21:52:04,923 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1393 transitions. Word has length 3 [2023-11-24 21:52:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:04,923 INFO L495 AbstractCegarLoop]: Abstraction has 1315 states and 1393 transitions. [2023-11-24 21:52:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-24 21:52:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1393 transitions. [2023-11-24 21:52:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 21:52:04,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:04,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:04,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-24 21:52:05,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:05,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:05,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2053395481, now seen corresponding path program 1 times [2023-11-24 21:52:05,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:05,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805925102] [2023-11-24 21:52:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:05,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:05,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:05,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:05,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:05,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:52:05,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:05,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:52:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:05,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:05,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:05,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805925102] [2023-11-24 21:52:05,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805925102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:05,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269059160] [2023-11-24 21:52:05,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:05,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:05,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:05,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:05,404 INFO L87 Difference]: Start difference. First operand 1315 states and 1393 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:08,819 INFO L93 Difference]: Finished difference Result 1345 states and 1434 transitions. [2023-11-24 21:52:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 21:52:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:08,829 INFO L225 Difference]: With dead ends: 1345 [2023-11-24 21:52:08,829 INFO L226 Difference]: Without dead ends: 1345 [2023-11-24 21:52:08,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:08,831 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1029 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:08,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 795 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-24 21:52:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2023-11-24 21:52:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1288. [2023-11-24 21:52:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 637 states have (on average 2.2150706436420724) internal successors, (1411), 1280 states have internal predecessors, (1411), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:52:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1423 transitions. [2023-11-24 21:52:08,868 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1423 transitions. Word has length 5 [2023-11-24 21:52:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:08,869 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1423 transitions. [2023-11-24 21:52:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1423 transitions. [2023-11-24 21:52:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 21:52:08,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:08,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:08,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:52:09,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:09,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:09,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2053395482, now seen corresponding path program 1 times [2023-11-24 21:52:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730259577] [2023-11-24 21:52:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:09,074 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 [2023-11-24 21:52:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:09,076 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:09,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:09,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:52:09,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:09,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:52:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:09,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:09,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730259577] [2023-11-24 21:52:09,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730259577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:09,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438946495] [2023-11-24 21:52:09,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:09,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:09,285 INFO L87 Difference]: Start difference. First operand 1288 states and 1423 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:14,269 INFO L93 Difference]: Finished difference Result 1560 states and 1715 transitions. [2023-11-24 21:52:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:14,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 21:52:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:14,279 INFO L225 Difference]: With dead ends: 1560 [2023-11-24 21:52:14,279 INFO L226 Difference]: Without dead ends: 1560 [2023-11-24 21:52:14,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:14,281 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 456 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:14,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1387 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-24 21:52:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2023-11-24 21:52:14,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1411. [2023-11-24 21:52:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 770 states have (on average 2.187012987012987) internal successors, (1684), 1403 states have internal predecessors, (1684), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:52:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1696 transitions. [2023-11-24 21:52:14,321 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1696 transitions. Word has length 5 [2023-11-24 21:52:14,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:14,322 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1696 transitions. [2023-11-24 21:52:14,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1696 transitions. [2023-11-24 21:52:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 21:52:14,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:14,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:52:14,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:52:14,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:14,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:14,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:14,526 INFO L85 PathProgramCache]: Analyzing trace with hash -767558231, now seen corresponding path program 1 times [2023-11-24 21:52:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:14,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796724260] [2023-11-24 21:52:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:14,527 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 [2023-11-24 21:52:14,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:14,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:14,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:14,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:52:14,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:14,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:14,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796724260] [2023-11-24 21:52:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796724260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:14,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147458094] [2023-11-24 21:52:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:14,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:14,747 INFO L87 Difference]: Start difference. First operand 1411 states and 1696 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:18,160 INFO L93 Difference]: Finished difference Result 2349 states and 2826 transitions. [2023-11-24 21:52:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:52:18,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 21:52:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:18,173 INFO L225 Difference]: With dead ends: 2349 [2023-11-24 21:52:18,173 INFO L226 Difference]: Without dead ends: 2349 [2023-11-24 21:52:18,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:18,175 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 899 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:18,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 3076 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-24 21:52:18,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2023-11-24 21:52:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1857. [2023-11-24 21:52:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1216 states have (on average 2.153782894736842) internal successors, (2619), 1846 states have internal predecessors, (2619), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:52:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2637 transitions. [2023-11-24 21:52:18,248 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2637 transitions. Word has length 6 [2023-11-24 21:52:18,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:18,248 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2637 transitions. [2023-11-24 21:52:18,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2637 transitions. [2023-11-24 21:52:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 21:52:18,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:18,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:18,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-24 21:52:18,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:18,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr647REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:18,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1110951699, now seen corresponding path program 1 times [2023-11-24 21:52:18,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:18,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642489144] [2023-11-24 21:52:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:18,454 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 [2023-11-24 21:52:18,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:18,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:18,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:18,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:52:18,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:18,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:18,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:18,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642489144] [2023-11-24 21:52:18,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642489144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:18,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:18,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:18,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326121764] [2023-11-24 21:52:18,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:18,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:18,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:18,696 INFO L87 Difference]: Start difference. First operand 1857 states and 2637 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 21:52:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:20,490 INFO L93 Difference]: Finished difference Result 1974 states and 2598 transitions. [2023-11-24 21:52:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:20,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-24 21:52:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:20,503 INFO L225 Difference]: With dead ends: 1974 [2023-11-24 21:52:20,504 INFO L226 Difference]: Without dead ends: 1974 [2023-11-24 21:52:20,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:20,505 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 370 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:20,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 2173 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 21:52:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2023-11-24 21:52:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1748. [2023-11-24 21:52:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1107 states have (on average 2.1598915989159893) internal successors, (2391), 1737 states have internal predecessors, (2391), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:52:20,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2409 transitions. [2023-11-24 21:52:20,556 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2409 transitions. Word has length 8 [2023-11-24 21:52:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:20,557 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2409 transitions. [2023-11-24 21:52:20,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 21:52:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2409 transitions. [2023-11-24 21:52:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:52:20,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:20,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:20,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:20,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:20,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr649REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:20,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:20,761 INFO L85 PathProgramCache]: Analyzing trace with hash -648325267, now seen corresponding path program 1 times [2023-11-24 21:52:20,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:20,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811295004] [2023-11-24 21:52:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:20,762 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 [2023-11-24 21:52:20,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:20,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:20,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:20,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:52:20,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:21,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:21,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:21,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811295004] [2023-11-24 21:52:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811295004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:21,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:21,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:21,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998246906] [2023-11-24 21:52:21,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:21,009 INFO L87 Difference]: Start difference. First operand 1748 states and 2409 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-24 21:52:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:24,156 INFO L93 Difference]: Finished difference Result 1974 states and 2597 transitions. [2023-11-24 21:52:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:52:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-24 21:52:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:24,168 INFO L225 Difference]: With dead ends: 1974 [2023-11-24 21:52:24,168 INFO L226 Difference]: Without dead ends: 1968 [2023-11-24 21:52:24,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:24,170 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 376 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:24,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 3147 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-24 21:52:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2023-11-24 21:52:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1742. [2023-11-24 21:52:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1101 states have (on average 2.165304268846503) internal successors, (2384), 1731 states have internal predecessors, (2384), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:52:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2402 transitions. [2023-11-24 21:52:24,219 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2402 transitions. Word has length 11 [2023-11-24 21:52:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:24,220 INFO L495 AbstractCegarLoop]: Abstraction has 1742 states and 2402 transitions. [2023-11-24 21:52:24,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-24 21:52:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2402 transitions. [2023-11-24 21:52:24,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:52:24,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:24,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:24,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:24,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:24,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:24,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash 206835011, now seen corresponding path program 1 times [2023-11-24 21:52:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071666662] [2023-11-24 21:52:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:24,426 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 [2023-11-24 21:52:24,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:24,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:24,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:24,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:52:24,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:24,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:24,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071666662] [2023-11-24 21:52:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071666662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:24,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816016261] [2023-11-24 21:52:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:24,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:24,653 INFO L87 Difference]: Start difference. First operand 1742 states and 2402 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-24 21:52:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:25,956 INFO L93 Difference]: Finished difference Result 1688 states and 2322 transitions. [2023-11-24 21:52:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-24 21:52:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:25,968 INFO L225 Difference]: With dead ends: 1688 [2023-11-24 21:52:25,969 INFO L226 Difference]: Without dead ends: 1688 [2023-11-24 21:52:25,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:25,970 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 70 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:25,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2093 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 21:52:25,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-11-24 21:52:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2023-11-24 21:52:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1071 states have (on average 2.1512605042016806) internal successors, (2304), 1677 states have internal predecessors, (2304), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:52:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2322 transitions. [2023-11-24 21:52:26,032 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2322 transitions. Word has length 11 [2023-11-24 21:52:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:26,032 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2322 transitions. [2023-11-24 21:52:26,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-24 21:52:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2322 transitions. [2023-11-24 21:52:26,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 21:52:26,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:26,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:26,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-24 21:52:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:26,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:26,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1199946813, now seen corresponding path program 1 times [2023-11-24 21:52:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281272128] [2023-11-24 21:52:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:26,238 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 [2023-11-24 21:52:26,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:26,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:26,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:26,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:52:26,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:26,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:26,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:26,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281272128] [2023-11-24 21:52:26,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281272128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:26,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:26,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:26,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136304892] [2023-11-24 21:52:26,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:26,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:26,484 INFO L87 Difference]: Start difference. First operand 1688 states and 2322 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) [2023-11-24 21:52:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:28,178 INFO L93 Difference]: Finished difference Result 1674 states and 2280 transitions. [2023-11-24 21:52:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:52:28,181 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 [2023-11-24 21:52:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:28,189 INFO L225 Difference]: With dead ends: 1674 [2023-11-24 21:52:28,189 INFO L226 Difference]: Without dead ends: 1674 [2023-11-24 21:52:28,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:28,191 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 58 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:28,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3096 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:52:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2023-11-24 21:52:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1672. [2023-11-24 21:52:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1069 states have (on average 2.1141253507951356) internal successors, (2260), 1661 states have internal predecessors, (2260), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:52:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2278 transitions. [2023-11-24 21:52:28,243 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2278 transitions. Word has length 13 [2023-11-24 21:52:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:28,244 INFO L495 AbstractCegarLoop]: Abstraction has 1672 states and 2278 transitions. [2023-11-24 21:52:28,244 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) [2023-11-24 21:52:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2278 transitions. [2023-11-24 21:52:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 21:52:28,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:28,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:28,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:28,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:28,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1280048373, now seen corresponding path program 1 times [2023-11-24 21:52:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:28,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970891026] [2023-11-24 21:52:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:28,451 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 [2023-11-24 21:52:28,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:28,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:28,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:52:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:28,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:52:28,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:28,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:52:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:28,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:28,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:28,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970891026] [2023-11-24 21:52:28,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970891026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112528449] [2023-11-24 21:52:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:28,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:28,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:28,824 INFO L87 Difference]: Start difference. First operand 1672 states and 2278 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-24 21:52:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:32,754 INFO L93 Difference]: Finished difference Result 1725 states and 2281 transitions. [2023-11-24 21:52:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:52:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-24 21:52:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:32,764 INFO L225 Difference]: With dead ends: 1725 [2023-11-24 21:52:32,764 INFO L226 Difference]: Without dead ends: 1725 [2023-11-24 21:52:32,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:32,765 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 964 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:32,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1207 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-24 21:52:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-11-24 21:52:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1668. [2023-11-24 21:52:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1069 states have (on average 2.1066417212347988) internal successors, (2252), 1657 states have internal predecessors, (2252), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:52:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2270 transitions. [2023-11-24 21:52:32,805 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2270 transitions. Word has length 27 [2023-11-24 21:52:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:32,805 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2270 transitions. [2023-11-24 21:52:32,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-24 21:52:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2270 transitions. [2023-11-24 21:52:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 21:52:32,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:32,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:32,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:52:33,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:33,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-24 21:52:33,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1280048372, now seen corresponding path program 1 times [2023-11-24 21:52:33,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127379299] [2023-11-24 21:52:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:33,012 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 [2023-11-24 21:52:33,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:33,013 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:52:33,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eac1b0b8-2c79-43c2-98ef-2149985591e2/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:52:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:33,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:52:33,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:33,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5