./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:19:59,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:19:59,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-21 17:19:59,935 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:19:59,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:19:59,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:19:59,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:19:59,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:19:59,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:19:59,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:19:59,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:19:59,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:19:59,998 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:20:00,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:20:00,002 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:20:00,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:20:00,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:20:00,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:20:00,004 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 17:20:00,004 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 17:20:00,005 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 17:20:00,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:20:00,006 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 17:20:00,007 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 17:20:00,007 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:20:00,008 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:20:00,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:20:00,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:20:00,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:20:00,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:20:00,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:20:00,012 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:20:00,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:20:00,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:20:00,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:20:00,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:20:00,013 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-21 17:20:00,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:20:00,014 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:20:00,014 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:20:00,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2023-11-21 17:20:00,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:20:00,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:20:00,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:20:00,341 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:20:00,342 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:20:00,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-21 17:20:03,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:20:03,980 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:20:03,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-21 17:20:03,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data/b7325b830/5da8588b69454b4b8dfcd4f90dcaa76c/FLAGf7cbf0902 [2023-11-21 17:20:04,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data/b7325b830/5da8588b69454b4b8dfcd4f90dcaa76c [2023-11-21 17:20:04,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:20:04,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:20:04,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:20:04,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:20:04,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:20:04,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:04" (1/1) ... [2023-11-21 17:20:04,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5c8011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:04, skipping insertion in model container [2023-11-21 17:20:04,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:04" (1/1) ... [2023-11-21 17:20:04,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:20:04,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:20:04,306 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-21 17:20:04,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7618b271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:04, skipping insertion in model container [2023-11-21 17:20:04,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:20:04,308 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 17:20:04,310 INFO L158 Benchmark]: Toolchain (without parser) took 300.09ms. Allocated memory is still 163.6MB. Free memory was 122.0MB in the beginning and 112.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 17:20:04,311 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 163.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 17:20:04,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.19ms. Allocated memory is still 163.6MB. Free memory was 121.5MB in the beginning and 112.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 17:20:04,313 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 163.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.19ms. Allocated memory is still 163.6MB. Free memory was 121.5MB in the beginning and 112.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:20:07,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:20:07,161 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf [2023-11-21 17:20:07,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:20:07,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:20:07,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:20:07,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:20:07,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:20:07,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:20:07,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:20:07,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:20:07,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:20:07,230 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:20:07,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:20:07,233 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:20:07,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:20:07,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:20:07,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:20:07,235 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 17:20:07,236 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 17:20:07,236 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 17:20:07,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:20:07,238 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 17:20:07,238 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 17:20:07,238 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 17:20:07,239 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 17:20:07,239 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:20:07,240 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:20:07,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:20:07,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:20:07,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:20:07,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:20:07,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:20:07,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:20:07,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:20:07,245 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 17:20:07,245 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 17:20:07,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:20:07,246 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-21 17:20:07,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:20:07,248 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:20:07,248 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:20:07,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 17:20:07,249 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2023-11-21 17:20:07,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:20:07,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:20:07,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:20:07,751 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:20:07,752 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:20:07,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-21 17:20:10,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:20:11,317 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:20:11,317 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2023-11-21 17:20:11,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data/6e4ecbde0/61fd66ab65944bcabc3b88278b3987ba/FLAG35e31b9a2 [2023-11-21 17:20:11,598 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/data/6e4ecbde0/61fd66ab65944bcabc3b88278b3987ba [2023-11-21 17:20:11,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:20:11,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:20:11,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:20:11,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:20:11,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:20:11,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:11" (1/1) ... [2023-11-21 17:20:11,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac30d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:11, skipping insertion in model container [2023-11-21 17:20:11,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:11" (1/1) ... [2023-11-21 17:20:11,662 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:20:11,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:20:12,011 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 17:20:12,031 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:20:12,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:20:12,086 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:20:12,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:20:12,154 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:20:12,154 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:20:12,181 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:20:12,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12 WrapperNode [2023-11-21 17:20:12,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:20:12,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:20:12,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:20:12,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:20:12,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,268 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 103 [2023-11-21 17:20:12,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:20:12,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:20:12,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:20:12,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:20:12,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:20:12,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:20:12,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:20:12,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:20:12,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (1/1) ... [2023-11-21 17:20:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:20:12,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:20:12,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:20:12,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:20:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:20:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 17:20:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:20:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 17:20:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 17:20:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 17:20:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 17:20:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 17:20:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 17:20:12,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 17:20:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 17:20:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 17:20:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 17:20:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:20:12,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:20:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:20:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 17:20:12,448 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 17:20:12,575 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:20:12,578 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:20:13,276 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:20:13,775 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:20:13,775 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 17:20:13,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:13 BoogieIcfgContainer [2023-11-21 17:20:13,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:20:13,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:20:13,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:20:13,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:20:13,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:20:11" (1/3) ... [2023-11-21 17:20:13,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b34e077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:13, skipping insertion in model container [2023-11-21 17:20:13,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:12" (2/3) ... [2023-11-21 17:20:13,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b34e077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:13, skipping insertion in model container [2023-11-21 17:20:13,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:13" (3/3) ... [2023-11-21 17:20:13,794 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-11-21 17:20:13,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:20:13,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-21 17:20:13,818 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:20:13,915 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 17:20:13,970 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:20:13,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:20:13,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:20:13,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:20:13,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:20:14,040 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:20:14,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork2 ======== [2023-11-21 17:20:14,065 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=PARTIAL_ORDER_FA, 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;@62c4002b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:20:14,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-21 17:20:14,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:14,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1707154380, now seen corresponding path program 1 times [2023-11-21 17:20:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:14,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534627468] [2023-11-21 17:20:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:14,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:14,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:14,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:14,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 17:20:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:14,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 17:20:14,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:14,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 17:20:14,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:14,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 17:20:14,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:14,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 17:20:14,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:14,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 17:20:14,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 17:20:14,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 17:20:14,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:14,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:15,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 17:20:15,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:15,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 17:20:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 17:20:15,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 17:20:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:15,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 17:20:15,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:15,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 17:20:15,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 17:20:15,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 17:20:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:15,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 17:20:15,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 17:20:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534627468] [2023-11-21 17:20:15,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534627468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:20:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:20:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 17:20:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876756892] [2023-11-21 17:20:15,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:20:15,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 17:20:15,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 17:20:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 17:20:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 17:20:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:15,318 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:15,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:20:15,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:15,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -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 [2023-11-21 17:20:15,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:15,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:15,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1707154379, now seen corresponding path program 1 times [2023-11-21 17:20:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:15,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912991262] [2023-11-21 17:20:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:15,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:15,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:15,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:15,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 17:20:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:15,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 17:20:15,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:15,879 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 8 treesize of output 7 [2023-11-21 17:20:15,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:15,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:15,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:15,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:15,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:15,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:15,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 17:20:16,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:16,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:16,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:16,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:16,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:16,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:16,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:16,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:16,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:16,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 17:20:16,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 17:20:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912991262] [2023-11-21 17:20:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912991262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:20:16,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:20:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 17:20:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540376039] [2023-11-21 17:20:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:20:16,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 17:20:16,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 17:20:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 17:20:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 17:20:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:16,569 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:16,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:20:16,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:16,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:16,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 17:20:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:17,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:17,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1127734432, now seen corresponding path program 1 times [2023-11-21 17:20:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:17,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891601525] [2023-11-21 17:20:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:17,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:17,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:17,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:17,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 17:20:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:17,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 17:20:17,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:17,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-21 17:20:17,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:17,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:17,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:17,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:17,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 17:20:17,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:17,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:17,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:17,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:17,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:17,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:17,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 17:20:17,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 17:20:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891601525] [2023-11-21 17:20:17,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891601525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:20:17,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:20:17,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 17:20:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163976934] [2023-11-21 17:20:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:20:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 17:20:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 17:20:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 17:20:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 17:20:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:17,999 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:18,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) 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) [2023-11-21 17:20:18,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:18,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:18,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:18,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-21 17:20:18,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:18,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:18,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1171401504, now seen corresponding path program 1 times [2023-11-21 17:20:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:18,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259650880] [2023-11-21 17:20:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:18,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:18,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:18,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:18,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 17:20:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:18,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 17:20:18,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:18,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-21 17:20:18,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:18,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:18,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:18,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:18,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:18,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:18,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:18,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:18,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:18,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:18,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:18,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:18,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:18,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 17:20:19,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:20:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 17:20:20,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 17:20:20,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259650880] [2023-11-21 17:20:20,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259650880] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:20:20,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 17:20:20,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-21 17:20:20,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508411758] [2023-11-21 17:20:20,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 17:20:20,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 17:20:20,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 17:20:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 17:20:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-21 17:20:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:20,089 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:20,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:20:20,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:20,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:20,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:20,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 17:20:21,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -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 [2023-11-21 17:20:21,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:21,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:21,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1618586443, now seen corresponding path program 2 times [2023-11-21 17:20:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:21,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665330635] [2023-11-21 17:20:21,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 17:20:21,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:21,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:21,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:21,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 17:20:21,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 17:20:21,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:20:21,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 17:20:21,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:21,999 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 8 treesize of output 7 [2023-11-21 17:20:22,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:22,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:22,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:22,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:22,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:22,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:22,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 17:20:22,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:22,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:22,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:22,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:22,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:23,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:20:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:24,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 17:20:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665330635] [2023-11-21 17:20:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665330635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:20:24,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 17:20:24,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-11-21 17:20:24,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491621419] [2023-11-21 17:20:24,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 17:20:24,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 17:20:24,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 17:20:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 17:20:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-21 17:20:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:24,836 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:24,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:20:24,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:24,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:24,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:24,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-21 17:20:24,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 17:20:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:26,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 17:20:26,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:26,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:26,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash 658244981, now seen corresponding path program 3 times [2023-11-21 17:20:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:26,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202966644] [2023-11-21 17:20:26,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 17:20:26,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:26,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:26,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:26,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 17:20:27,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-21 17:20:27,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:20:27,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 17:20:27,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:27,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-21 17:20:27,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:27,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:27,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:27,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:27,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:27,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:27,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:27,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:27,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:27,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:27,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:27,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:27,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:27,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 17:20:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 17:20:28,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:20:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 17:20:30,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 17:20:30,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202966644] [2023-11-21 17:20:30,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202966644] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:20:30,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 17:20:30,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2023-11-21 17:20:30,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528944310] [2023-11-21 17:20:30,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 17:20:30,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 17:20:30,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 17:20:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 17:20:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-11-21 17:20:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:30,795 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:30,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:20:30,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:30,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:30,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:30,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-21 17:20:30,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:30,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 17:20:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-21 17:20:41,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 17:20:41,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:41,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:41,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash -64425515, now seen corresponding path program 4 times [2023-11-21 17:20:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695228545] [2023-11-21 17:20:41,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 17:20:41,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:41,927 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:41,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 17:20:42,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 17:20:42,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:20:42,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-21 17:20:42,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:42,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-21 17:20:42,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:42,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:42,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:42,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:42,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:42,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:42,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 17:20:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:42,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:42,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:42,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 69 proven. 93 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-21 17:20:43,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:20:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:48,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 17:20:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695228545] [2023-11-21 17:20:48,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695228545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:20:48,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 17:20:48,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 33 [2023-11-21 17:20:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394983012] [2023-11-21 17:20:48,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 17:20:48,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-21 17:20:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 17:20:48,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-21 17:20:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 17:20:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:48,711 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:48,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:20:48,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:48,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:48,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:48,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-21 17:20:48,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:48,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-21 17:20:48,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:20:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 17:20:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:20:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-21 17:20:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 17:20:52,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -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 [2023-11-21 17:20:52,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:52,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1 more)] === [2023-11-21 17:20:52,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1218056917, now seen corresponding path program 5 times [2023-11-21 17:20:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 17:20:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921995875] [2023-11-21 17:20:52,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-21 17:20:52,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 17:20:52,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat [2023-11-21 17:20:52,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 17:20:52,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1631a1a8-81cf-4320-b284-0f70a88f7a54/bin/ugemcutter-verify-n4DOmGwLwf/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 17:20:53,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-21 17:20:53,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:20:53,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-21 17:20:53,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:20:53,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-21 17:20:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:53,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:53,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:53,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:53,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:53,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:53,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 17:20:53,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:53,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 17:20:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 17:20:53,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 17:20:53,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 17:20:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 29 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:56,108 INFO L327 TraceCheckSpWp]: Computing backward predicates...