./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i --witnessprinter.witness.filename witness.graphml --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 14:08:26,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 14:08:26,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-06 14:08:26,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 14:08:26,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 14:08:26,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 14:08:26,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 14:08:26,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 14:08:26,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 14:08:26,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 14:08:26,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 14:08:26,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 14:08:26,505 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 14:08:26,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 14:08:26,506 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 14:08:26,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 14:08:26,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 14:08:26,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 14:08:26,509 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 14:08:26,509 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 14:08:26,510 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 14:08:26,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 14:08:26,511 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 14:08:26,511 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 14:08:26,512 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 14:08:26,512 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 14:08:26,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 14:08:26,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 14:08:26,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 14:08:26,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:08:26,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 14:08:26,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 14:08:26,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 14:08:26,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 14:08:26,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-06 14:08:26,516 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-06 14:08:26,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-06 14:08:26,517 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-06 14:08:26,518 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-06 14:08:26,518 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_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2023-11-06 14:08:26,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 14:08:26,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 14:08:26,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 14:08:26,860 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 14:08:26,860 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 14:08:26,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 14:08:30,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 14:08:30,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 14:08:30,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 14:08:30,280 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data/d9eac607c/1608eb7089c042779b1aaff99cfec37e/FLAGd2537a711 [2023-11-06 14:08:30,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data/d9eac607c/1608eb7089c042779b1aaff99cfec37e [2023-11-06 14:08:30,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 14:08:30,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 14:08:30,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 14:08:30,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 14:08:30,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 14:08:30,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:08:30" (1/1) ... [2023-11-06 14:08:30,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284900ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:30, skipping insertion in model container [2023-11-06 14:08:30,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:08:30" (1/1) ... [2023-11-06 14:08:30,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 14:08:30,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:08:30,583 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) [2023-11-06 14:08:30,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c5e8344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:30, skipping insertion in model container [2023-11-06 14:08:30,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 14:08:30,584 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 14:08:30,586 INFO L158 Benchmark]: Toolchain (without parser) took 284.95ms. Allocated memory is still 169.9MB. Free memory was 124.1MB in the beginning and 113.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 14:08:30,587 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 127.9MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 14:08:30,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.51ms. Allocated memory is still 169.9MB. Free memory was 124.1MB in the beginning and 113.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 14:08:30,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 127.9MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.51ms. Allocated memory is still 169.9MB. Free memory was 124.1MB in the beginning and 113.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 151]: 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_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i --witnessprinter.witness.filename witness.graphml --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 14:08:33,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 14:08:33,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf [2023-11-06 14:08:33,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 14:08:33,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 14:08:33,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 14:08:33,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 14:08:33,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 14:08:33,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 14:08:33,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 14:08:33,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 14:08:33,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 14:08:33,359 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 14:08:33,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 14:08:33,361 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 14:08:33,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 14:08:33,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 14:08:33,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 14:08:33,363 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 14:08:33,364 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 14:08:33,365 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 14:08:33,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 14:08:33,366 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 14:08:33,366 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 14:08:33,367 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 14:08:33,367 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 14:08:33,368 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 14:08:33,368 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 14:08:33,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 14:08:33,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 14:08:33,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 14:08:33,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:08:33,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 14:08:33,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 14:08:33,372 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 14:08:33,373 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 14:08:33,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-06 14:08:33,373 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-06 14:08:33,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-06 14:08:33,374 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-06 14:08:33,375 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-06 14:08:33,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 14:08:33,375 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_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2023-11-06 14:08:33,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 14:08:33,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 14:08:33,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 14:08:33,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 14:08:33,832 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 14:08:33,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 14:08:37,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 14:08:37,591 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 14:08:37,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 14:08:37,602 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data/f6a88dd06/b4349d12c1074b45b82e21206c2eefd0/FLAG2ffdc75d7 [2023-11-06 14:08:37,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/data/f6a88dd06/b4349d12c1074b45b82e21206c2eefd0 [2023-11-06 14:08:37,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 14:08:37,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 14:08:37,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 14:08:37,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 14:08:37,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 14:08:37,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:08:37" (1/1) ... [2023-11-06 14:08:37,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116bbea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:37, skipping insertion in model container [2023-11-06 14:08:37,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:08:37" (1/1) ... [2023-11-06 14:08:37,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 14:08:37,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:08:37,992 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 14:08:37,997 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 14:08:38,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:08:38,033 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 14:08:38,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:08:38,092 INFO L206 MainTranslator]: Completed translation [2023-11-06 14:08:38,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38 WrapperNode [2023-11-06 14:08:38,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 14:08:38,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 14:08:38,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 14:08:38,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 14:08:38,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,166 INFO L138 Inliner]: procedures = 28, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 299 [2023-11-06 14:08:38,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 14:08:38,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 14:08:38,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 14:08:38,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 14:08:38,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 14:08:38,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 14:08:38,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 14:08:38,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 14:08:38,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (1/1) ... [2023-11-06 14:08:38,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:08:38,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:08:38,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 14:08:38,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 14:08:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 14:08:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 14:08:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 14:08:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 14:08:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 14:08:38,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 14:08:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 14:08:38,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 14:08:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 14:08:38,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 14:08:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 14:08:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 14:08:38,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 14:08:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 14:08:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 14:08:38,379 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 14:08:38,523 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 14:08:38,525 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 14:08:39,445 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 14:08:39,473 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 14:08:39,473 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 14:08:39,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:08:39 BoogieIcfgContainer [2023-11-06 14:08:39,476 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 14:08:39,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 14:08:39,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 14:08:39,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 14:08:39,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:08:37" (1/3) ... [2023-11-06 14:08:39,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2c3111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:08:39, skipping insertion in model container [2023-11-06 14:08:39,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:08:38" (2/3) ... [2023-11-06 14:08:39,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2c3111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:08:39, skipping insertion in model container [2023-11-06 14:08:39,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:08:39" (3/3) ... [2023-11-06 14:08:39,490 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-11-06 14:08:39,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 14:08:39,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-06 14:08:39,512 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 14:08:39,716 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 14:08:39,806 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:08:39,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:08:39,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:08:39,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:08:39,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-06 14:08:39,856 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:08:39,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork0 ======== [2023-11-06 14:08:39,877 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;@357fcba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:08:39,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 14:08:40,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-06 14:08:40,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:08:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1801352631, now seen corresponding path program 1 times [2023-11-06 14:08:40,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 14:08:40,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476693602] [2023-11-06 14:08:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:08:40,497 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 [2023-11-06 14:08:40,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat [2023-11-06 14:08:40,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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) [2023-11-06 14:08:40,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:08:40,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 14:08:40,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:08:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:08:40,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 14:08:40,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 14:08:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476693602] [2023-11-06 14:08:40,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476693602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:08:40,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:08:40,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 14:08:40,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948606494] [2023-11-06 14:08:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:08:40,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 14:08:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 14:08:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 14:08:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 14:08:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:40,860 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:08:40,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 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) [2023-11-06 14:08:40,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:40,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:41,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 14:08:41,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-06 14:08:41,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:08:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash -594858483, now seen corresponding path program 1 times [2023-11-06 14:08:41,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 14:08:41,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408526184] [2023-11-06 14:08:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:08:41,175 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 [2023-11-06 14:08:41,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat [2023-11-06 14:08:41,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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) [2023-11-06 14:08:41,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:08:41,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 14:08:41,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:08:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:08:41,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 14:08:41,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 14:08:41,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408526184] [2023-11-06 14:08:41,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408526184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:08:41,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:08:41,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 14:08:41,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439560508] [2023-11-06 14:08:41,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:08:41,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 14:08:41,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 14:08:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 14:08:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 14:08:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:41,433 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:08:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-06 14:08:41,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:41,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:41,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:41,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 14:08:41,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-06 14:08:41,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:08:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash 582295960, now seen corresponding path program 1 times [2023-11-06 14:08:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 14:08:41,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954148767] [2023-11-06 14:08:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:08:41,789 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 [2023-11-06 14:08:41,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat [2023-11-06 14:08:41,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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) [2023-11-06 14:08:41,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:08:41,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 14:08:41,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:08:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:08:42,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:08:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:08:42,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 14:08:42,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954148767] [2023-11-06 14:08:42,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954148767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:08:42,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 14:08:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-06 14:08:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805438123] [2023-11-06 14:08:42,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 14:08:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 14:08:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 14:08:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 14:08:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-06 14:08:42,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:42,319 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:08:42,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 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) [2023-11-06 14:08:42,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:42,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:42,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:42,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:42,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 14:08:42,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-06 14:08:42,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:08:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1269731320, now seen corresponding path program 2 times [2023-11-06 14:08:42,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 14:08:42,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295144536] [2023-11-06 14:08:42,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 14:08:42,900 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 [2023-11-06 14:08:42,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat [2023-11-06 14:08:42,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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) [2023-11-06 14:08:42,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:43,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 14:08:43,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:08:43,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 14:08:43,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:08:43,135 INFO L351 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 [2023-11-06 14:08:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 14:08:43,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 14:08:43,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 14:08:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295144536] [2023-11-06 14:08:43,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295144536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:08:43,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:08:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 14:08:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13565554] [2023-11-06 14:08:43,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:08:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 14:08:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 14:08:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 14:08:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 14:08:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:43,321 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:08:43,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.0) internal successors, (132), 7 states have internal predecessors, (132), 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) [2023-11-06 14:08:43,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:43,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:43,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:43,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 14:08:43,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:43,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 14:08:43,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-06 14:08:43,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:08:43,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1269731321, now seen corresponding path program 1 times [2023-11-06 14:08:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 14:08:43,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097009486] [2023-11-06 14:08:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:08:43,855 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 [2023-11-06 14:08:43,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat [2023-11-06 14:08:43,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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) [2023-11-06 14:08:43,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:08:44,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 14:08:44,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:08:44,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 14:08:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 14:08:44,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 14:08:44,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 14:08:44,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097009486] [2023-11-06 14:08:44,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097009486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:08:44,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:08:44,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 14:08:44,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022320117] [2023-11-06 14:08:44,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:08:44,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 14:08:44,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 14:08:44,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 14:08:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 14:08:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:44,667 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:08:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 10 states have internal predecessors, (132), 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) [2023-11-06 14:08:44,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:44,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:44,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:44,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-06 14:08:44,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 14:08:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 14:08:45,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 14:08:45,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-06 14:08:45,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:08:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 570229370, now seen corresponding path program 1 times [2023-11-06 14:08:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 14:08:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432293820] [2023-11-06 14:08:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:08:45,540 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 [2023-11-06 14:08:45,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat [2023-11-06 14:08:45,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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) [2023-11-06 14:08:45,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:08:45,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 14:08:45,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:08:45,797 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 14:08:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 14:08:46,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:08:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 14:08:48,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 14:08:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432293820] [2023-11-06 14:08:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432293820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:08:48,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 14:08:48,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-06 14:08:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61775314] [2023-11-06 14:08:48,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 14:08:48,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 14:08:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 14:08:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 14:08:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-11-06 14:08:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:48,481 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:08:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 10.904761904761905) internal successors, (229), 22 states have internal predecessors, (229), 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) [2023-11-06 14:08:48,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:48,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:48,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:48,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-06 14:08:48,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-11-06 14:08:48,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 14:08:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 14:08:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 14:08:50,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:50,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 14:08:50,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-06 14:08:50,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:08:50,965 INFO L85 PathProgramCache]: Analyzing trace with hash 173531162, now seen corresponding path program 2 times [2023-11-06 14:08:50,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 14:08:50,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184351868] [2023-11-06 14:08:50,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 14:08:50,966 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 [2023-11-06 14:08:50,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat [2023-11-06 14:08:50,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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) [2023-11-06 14:08:50,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb45b1fb-c866-4029-a1d5-a37b9640c8a6/bin/ugemcutter-verify-t8buoWUS1i/mathsat -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 [2023-11-06 14:08:51,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 14:08:51,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:08:51,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 14:08:51,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:08:51,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 14:08:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 9 proven. 78 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 14:08:52,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:08:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 14:08:55,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 14:08:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184351868] [2023-11-06 14:08:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184351868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:08:55,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 14:08:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 28 [2023-11-06 14:08:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221460602] [2023-11-06 14:08:55,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 14:08:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 14:08:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 14:08:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 14:08:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2023-11-06 14:08:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:55,919 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:08:55,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.892857142857142) internal successors, (305), 28 states have internal predecessors, (305), 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) [2023-11-06 14:08:55,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:08:55,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:08:55,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-06 14:08:55,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-06 14:08:55,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-11-06 14:08:55,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2023-11-06 14:08:55,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.