./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 207ea7efa81a205528159a2c1c5225b996f0eb4901bda418907cbc964f19b86c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:12,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:12,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:04:12,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:12,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:12,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:12,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:12,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:12,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:12,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:12,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:12,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:12,425 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:12,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:12,427 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:12,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:12,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:12,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:12,429 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:04:12,430 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:04:12,430 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:04:12,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:12,431 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:04:12,432 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:12,432 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:12,432 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:12,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:12,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:12,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:12,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:12,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:12,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:12,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:12,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:12,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:12,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:12,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:12,438 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:12,438 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 207ea7efa81a205528159a2c1c5225b996f0eb4901bda418907cbc964f19b86c [2023-11-06 22:04:12,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:12,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:12,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:12,799 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:12,800 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:12,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-1.i [2023-11-06 22:04:16,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:16,477 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:16,477 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/sv-benchmarks/c/ldv-memsafety/memleaks_test10-1.i [2023-11-06 22:04:16,494 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data/62b2a4bc6/c64828322be64a4597f9985a996164a2/FLAGefada022b [2023-11-06 22:04:16,510 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data/62b2a4bc6/c64828322be64a4597f9985a996164a2 [2023-11-06 22:04:16,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:16,514 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:16,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:16,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:16,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:16,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3e56de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:16, skipping insertion in model container [2023-11-06 22:04:16,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:16" (1/1) ... [2023-11-06 22:04:16,576 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:17,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:17,136 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 22:04:17,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fdb71ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:17, skipping insertion in model container [2023-11-06 22:04:17,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:17,138 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:04:17,141 INFO L158 Benchmark]: Toolchain (without parser) took 625.16ms. Allocated memory is still 146.8MB. Free memory was 103.0MB in the beginning and 89.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:04:17,142 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:04:17,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.61ms. Allocated memory is still 146.8MB. Free memory was 102.7MB in the beginning and 89.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:04:17,145 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 622.61ms. Allocated memory is still 146.8MB. Free memory was 102.7MB in the beginning and 89.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 207ea7efa81a205528159a2c1c5225b996f0eb4901bda418907cbc964f19b86c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:19,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:19,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:04:19,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:19,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:19,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:19,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:19,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:19,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:19,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:19,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:19,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:19,936 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:19,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:19,937 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:19,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:19,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:19,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:19,941 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:04:19,941 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:04:19,942 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:04:19,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:19,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:04:19,944 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:04:19,945 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:04:19,946 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:19,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:19,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:19,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:19,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:19,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:19,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:19,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:19,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:19,951 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:04:19,952 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:04:19,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:19,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:19,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:19,954 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:04:19,955 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:19,955 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 207ea7efa81a205528159a2c1c5225b996f0eb4901bda418907cbc964f19b86c [2023-11-06 22:04:20,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:20,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:20,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:20,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:20,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:20,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-1.i [2023-11-06 22:04:23,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:24,094 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:24,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/sv-benchmarks/c/ldv-memsafety/memleaks_test10-1.i [2023-11-06 22:04:24,126 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data/404f9dd46/95ff508e4ebc414fae24172b71c02e6f/FLAGb8afb1e78 [2023-11-06 22:04:24,147 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/data/404f9dd46/95ff508e4ebc414fae24172b71c02e6f [2023-11-06 22:04:24,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:24,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:24,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:24,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:24,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:24,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:24" (1/1) ... [2023-11-06 22:04:24,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f818995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24, skipping insertion in model container [2023-11-06 22:04:24,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:24" (1/1) ... [2023-11-06 22:04:24,225 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:24,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:24,866 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:04:24,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:24,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:24,996 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:25,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:25,163 WARN L672 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:25,173 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:25,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25 WrapperNode [2023-11-06 22:04:25,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:25,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:25,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:25,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:25,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,240 INFO L138 Inliner]: procedures = 167, calls = 91, calls flagged for inlining = 22, calls inlined = 4, statements flattened = 65 [2023-11-06 22:04:25,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:25,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:25,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:25,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:25,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:25,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:25,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:25,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:25,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (1/1) ... [2023-11-06 22:04:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:25,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:25,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:25,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 22:04:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 22:04:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:04:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:04:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:25,581 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:25,584 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:26,040 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:26,051 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:26,055 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:04:26,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:26 BoogieIcfgContainer [2023-11-06 22:04:26,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:26,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:26,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:26,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:26,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:24" (1/3) ... [2023-11-06 22:04:26,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3932b95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:26, skipping insertion in model container [2023-11-06 22:04:26,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:25" (2/3) ... [2023-11-06 22:04:26,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3932b95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:26, skipping insertion in model container [2023-11-06 22:04:26,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:26" (3/3) ... [2023-11-06 22:04:26,071 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test10-1.i [2023-11-06 22:04:26,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:26,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-06 22:04:26,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:26,178 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36563b9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:26,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-06 22:04:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 37 states have (on average 2.027027027027027) internal successors, (75), 71 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:04:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:04:26,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:26,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:26,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:26,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1838783457, now seen corresponding path program 1 times [2023-11-06 22:04:26,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093716211] [2023-11-06 22:04:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:26,218 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 22:04:26,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:26,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:26,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:04:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:26,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:04:26,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:26,514 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 22:04:26,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:26,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093716211] [2023-11-06 22:04:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093716211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:26,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:26,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:26,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318462133] [2023-11-06 22:04:26,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:26,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:26,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:26,575 INFO L87 Difference]: Start difference. First operand has 77 states, 37 states have (on average 2.027027027027027) internal successors, (75), 71 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:04:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:27,019 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2023-11-06 22:04:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:27,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-06 22:04:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:27,037 INFO L225 Difference]: With dead ends: 144 [2023-11-06 22:04:27,037 INFO L226 Difference]: Without dead ends: 142 [2023-11-06 22:04:27,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:27,045 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 63 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:27,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 369 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:04:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-06 22:04:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 79. [2023-11-06 22:04:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 72 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 22:04:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2023-11-06 22:04:27,118 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 11 [2023-11-06 22:04:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:27,119 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2023-11-06 22:04:27,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:04:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2023-11-06 22:04:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:04:27,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:27,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:27,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:27,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:27,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:27,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:27,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1568680158, now seen corresponding path program 1 times [2023-11-06 22:04:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123019903] [2023-11-06 22:04:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:27,341 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 22:04:27,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:27,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:27,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:27,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:04:27,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:27,488 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 22:04:27,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:27,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123019903] [2023-11-06 22:04:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123019903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:27,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:27,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:04:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553690224] [2023-11-06 22:04:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:27,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:27,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:27,495 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:04:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:27,920 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2023-11-06 22:04:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:04:27,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-06 22:04:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:27,923 INFO L225 Difference]: With dead ends: 144 [2023-11-06 22:04:27,923 INFO L226 Difference]: Without dead ends: 142 [2023-11-06 22:04:27,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:27,925 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 60 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:27,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 247 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:04:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-06 22:04:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 75. [2023-11-06 22:04:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 36 states have (on average 2.0) internal successors, (72), 69 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:04:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2023-11-06 22:04:27,949 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 11 [2023-11-06 22:04:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:27,950 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2023-11-06 22:04:27,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:04:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2023-11-06 22:04:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:04:27,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:27,952 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:27,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:28,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:28,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:28,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash -27781040, now seen corresponding path program 1 times [2023-11-06 22:04:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:28,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686489542] [2023-11-06 22:04:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:28,163 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 22:04:28,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:28,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:28,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:28,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:04:28,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:28,305 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 22:04:28,416 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-06 22:04:28,501 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:04:28,501 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:04:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:04:28,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:28,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:28,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686489542] [2023-11-06 22:04:28,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686489542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:28,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:04:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2023-11-06 22:04:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674423558] [2023-11-06 22:04:28,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:04:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:04:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-11-06 22:04:28,812 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:04:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:29,376 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2023-11-06 22:04:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:04:29,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2023-11-06 22:04:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:29,378 INFO L225 Difference]: With dead ends: 85 [2023-11-06 22:04:29,378 INFO L226 Difference]: Without dead ends: 85 [2023-11-06 22:04:29,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2023-11-06 22:04:29,381 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 55 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:29,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 127 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 218 Invalid, 0 Unknown, 93 Unchecked, 0.5s Time] [2023-11-06 22:04:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-06 22:04:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2023-11-06 22:04:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 73 states have internal predecessors, (80), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 22:04:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2023-11-06 22:04:29,403 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 15 [2023-11-06 22:04:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:29,404 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2023-11-06 22:04:29,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:04:29,406 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2023-11-06 22:04:29,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:04:29,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:29,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:29,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:29,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:29,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:29,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -27781039, now seen corresponding path program 1 times [2023-11-06 22:04:29,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:29,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343245328] [2023-11-06 22:04:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:29,641 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 22:04:29,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:29,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:29,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:29,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:04:29,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:29,765 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 22:04:29,958 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2023-11-06 22:04:29,995 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:04:29,996 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:04:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:04:30,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:30,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343245328] [2023-11-06 22:04:30,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343245328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:30,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622216801] [2023-11-06 22:04:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:30,299 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:04:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:04:30,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:04:30,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-06 22:04:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:30,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:04:30,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:30,477 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 22:04:30,484 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 22:04:30,740 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-06 22:04:30,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:30,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:04:30,796 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:04:30,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:04:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:04:30,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622216801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:33,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:04:33,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-06 22:04:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014495050] [2023-11-06 22:04:33,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:33,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:04:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:04:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=172, Unknown=3, NotChecked=54, Total=272 [2023-11-06 22:04:33,116 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:04:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:34,213 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2023-11-06 22:04:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:04:34,214 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 15 [2023-11-06 22:04:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:34,216 INFO L225 Difference]: With dead ends: 148 [2023-11-06 22:04:34,216 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 22:04:34,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=54, Invalid=223, Unknown=3, NotChecked=62, Total=342 [2023-11-06 22:04:34,218 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 70 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:34,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 227 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 480 Invalid, 0 Unknown, 316 Unchecked, 1.0s Time] [2023-11-06 22:04:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 22:04:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 109. [2023-11-06 22:04:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 70 states have (on average 1.8) internal successors, (126), 99 states have internal predecessors, (126), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:04:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2023-11-06 22:04:34,250 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 15 [2023-11-06 22:04:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:34,250 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2023-11-06 22:04:34,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:04:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2023-11-06 22:04:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:04:34,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:34,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:34,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:34,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:34,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:04:34,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:34,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1824732399, now seen corresponding path program 1 times [2023-11-06 22:04:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195560854] [2023-11-06 22:04:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:34,665 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 22:04:34,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:34,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:34,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:34,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:04:34,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:34,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:34,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:34,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195560854] [2023-11-06 22:04:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195560854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:34,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881649298] [2023-11-06 22:04:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:34,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:34,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:34,818 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:04:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:34,874 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2023-11-06 22:04:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-11-06 22:04:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:34,876 INFO L225 Difference]: With dead ends: 71 [2023-11-06 22:04:34,876 INFO L226 Difference]: Without dead ends: 69 [2023-11-06 22:04:34,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:34,877 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:34,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:04:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-06 22:04:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-06 22:04:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 63 states have internal predecessors, (66), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-06 22:04:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2023-11-06 22:04:34,893 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 15 [2023-11-06 22:04:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:34,894 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2023-11-06 22:04:34,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:04:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2023-11-06 22:04:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:04:34,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:34,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:34,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,108 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:35,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1259761877, now seen corresponding path program 1 times [2023-11-06 22:04:35,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:35,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403116103] [2023-11-06 22:04:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:35,110 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 22:04:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:35,112 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:35,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:04:35,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:35,221 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:04:35,245 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 22:04:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:35,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:35,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403116103] [2023-11-06 22:04:35,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403116103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:35,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:35,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:04:35,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341627569] [2023-11-06 22:04:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:35,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:04:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:35,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:04:35,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:04:35,260 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:04:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:35,430 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2023-11-06 22:04:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:04:35,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-06 22:04:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:35,432 INFO L225 Difference]: With dead ends: 78 [2023-11-06 22:04:35,432 INFO L226 Difference]: Without dead ends: 78 [2023-11-06 22:04:35,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:04:35,433 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 6 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:35,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 303 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:04:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-06 22:04:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2023-11-06 22:04:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 66 states have internal predecessors, (70), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-06 22:04:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2023-11-06 22:04:35,440 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 20 [2023-11-06 22:04:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:35,441 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2023-11-06 22:04:35,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:04:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2023-11-06 22:04:35,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:04:35,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:35,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:35,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:35,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1227750956, now seen corresponding path program 1 times [2023-11-06 22:04:35,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:35,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236316743] [2023-11-06 22:04:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:35,655 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 22:04:35,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:35,657 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:35,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:04:35,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:35,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:36,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:36,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236316743] [2023-11-06 22:04:36,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236316743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:36,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:04:36,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2023-11-06 22:04:36,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020261653] [2023-11-06 22:04:36,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:36,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:04:36,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:04:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:04:36,105 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:04:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:36,391 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2023-11-06 22:04:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:04:36,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2023-11-06 22:04:36,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:36,393 INFO L225 Difference]: With dead ends: 76 [2023-11-06 22:04:36,393 INFO L226 Difference]: Without dead ends: 74 [2023-11-06 22:04:36,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:04:36,394 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 93 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:36,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 178 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:04:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-06 22:04:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-06 22:04:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 66 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-06 22:04:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2023-11-06 22:04:36,401 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 20 [2023-11-06 22:04:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:36,402 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2023-11-06 22:04:36,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:04:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2023-11-06 22:04:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:04:36,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:36,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:36,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:04:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:36,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:36,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -12644306, now seen corresponding path program 1 times [2023-11-06 22:04:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:36,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070969032] [2023-11-06 22:04:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:36,617 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 22:04:36,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:36,618 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:36,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:04:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:36,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:04:36,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:36,882 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)))) is different from true [2023-11-06 22:04:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:36,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:37,002 INFO L322 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2023-11-06 22:04:37,002 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2023-11-06 22:04:39,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070969032] [2023-11-06 22:04:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070969032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1675015862] [2023-11-06 22:04:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:39,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:04:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:04:39,157 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:04:39,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-06 22:04:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:39,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:04:39,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:39,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:39,678 INFO L322 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2023-11-06 22:04:39,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2023-11-06 22:04:41,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1675015862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:41,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:04:41,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-11-06 22:04:41,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551953780] [2023-11-06 22:04:41,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:41,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:04:41,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:41,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:04:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=105, Unknown=2, NotChecked=20, Total=156 [2023-11-06 22:04:41,857 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:04:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:42,810 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2023-11-06 22:04:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:04:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2023-11-06 22:04:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:42,812 INFO L225 Difference]: With dead ends: 116 [2023-11-06 22:04:42,812 INFO L226 Difference]: Without dead ends: 111 [2023-11-06 22:04:42,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=63, Invalid=245, Unknown=2, NotChecked=32, Total=342 [2023-11-06 22:04:42,813 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 100 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:42,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 325 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 454 Invalid, 0 Unknown, 122 Unchecked, 0.8s Time] [2023-11-06 22:04:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-06 22:04:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 67. [2023-11-06 22:04:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.55) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-06 22:04:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2023-11-06 22:04:42,822 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 23 [2023-11-06 22:04:42,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:42,822 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2023-11-06 22:04:42,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:04:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2023-11-06 22:04:42,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:04:42,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:42,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:42,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:43,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:43,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:43,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:43,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1738347476, now seen corresponding path program 1 times [2023-11-06 22:04:43,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:43,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791952785] [2023-11-06 22:04:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:43,229 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 22:04:43,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:43,230 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:43,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:04:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:43,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:04:43,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:43,346 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 22:04:43,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:04:43,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:04:43,470 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-06 22:04:43,494 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:04:43,495 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:04:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-11-06 22:04:43,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:43,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:43,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791952785] [2023-11-06 22:04:43,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791952785] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:04:43,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:04:43,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2023-11-06 22:04:43,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909156530] [2023-11-06 22:04:43,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:43,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:04:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:04:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2023-11-06 22:04:43,731 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:04:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:44,267 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2023-11-06 22:04:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:04:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-11-06 22:04:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:44,269 INFO L225 Difference]: With dead ends: 75 [2023-11-06 22:04:44,269 INFO L226 Difference]: Without dead ends: 75 [2023-11-06 22:04:44,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=85, Unknown=1, NotChecked=18, Total=132 [2023-11-06 22:04:44,270 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 7 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:44,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 229 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 225 Invalid, 0 Unknown, 78 Unchecked, 0.5s Time] [2023-11-06 22:04:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-06 22:04:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2023-11-06 22:04:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.5) internal successors, (69), 65 states have internal predecessors, (69), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-06 22:04:44,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2023-11-06 22:04:44,277 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 25 [2023-11-06 22:04:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:44,277 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2023-11-06 22:04:44,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:04:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2023-11-06 22:04:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:04:44,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:44,280 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:44,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:44,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:44,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:44,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:44,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1738347475, now seen corresponding path program 1 times [2023-11-06 22:04:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:44,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633367453] [2023-11-06 22:04:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:44,522 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 22:04:44,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:44,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:44,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:04:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:44,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:04:44,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:44,651 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 22:04:44,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:04:44,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:04:44,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 22:04:44,872 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2023-11-06 22:04:44,900 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:04:44,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:04:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-11-06 22:04:44,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:45,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633367453] [2023-11-06 22:04:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633367453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1336070263] [2023-11-06 22:04:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:45,164 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:04:45,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:04:45,165 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:04:45,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-06 22:04:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:45,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:04:45,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:45,364 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 22:04:45,371 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 22:04:45,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:04:45,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:04:45,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-06 22:04:45,714 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-06 22:04:45,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:04:45,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:04:45,764 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:04:45,770 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:04:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-11-06 22:04:45,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1336070263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:46,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:04:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-06 22:04:46,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87117357] [2023-11-06 22:04:46,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:46,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:04:46,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:46,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:04:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=230, Unknown=2, NotChecked=62, Total=342 [2023-11-06 22:04:46,044 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:04:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:47,132 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2023-11-06 22:04:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:04:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2023-11-06 22:04:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:47,134 INFO L225 Difference]: With dead ends: 76 [2023-11-06 22:04:47,134 INFO L226 Difference]: Without dead ends: 76 [2023-11-06 22:04:47,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=387, Unknown=2, NotChecked=82, Total=552 [2023-11-06 22:04:47,136 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 11 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:47,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 398 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 381 Invalid, 0 Unknown, 158 Unchecked, 0.8s Time] [2023-11-06 22:04:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-06 22:04:47,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-06 22:04:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-06 22:04:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-11-06 22:04:47,142 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 25 [2023-11-06 22:04:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:47,142 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-11-06 22:04:47,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:04:47,143 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-11-06 22:04:47,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:04:47,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:47,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:47,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:47,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:47,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:47,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:47,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2051061195, now seen corresponding path program 1 times [2023-11-06 22:04:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:47,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906685663] [2023-11-06 22:04:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:47,549 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 22:04:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:47,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:47,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:04:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:47,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:04:47,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:47,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:04:47,710 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:04:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:04:47,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:47,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906685663] [2023-11-06 22:04:47,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906685663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:47,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:47,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:04:47,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053229321] [2023-11-06 22:04:47,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:47,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:04:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:04:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:04:47,774 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:04:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:47,966 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2023-11-06 22:04:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:04:47,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-11-06 22:04:47,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:47,967 INFO L225 Difference]: With dead ends: 69 [2023-11-06 22:04:47,967 INFO L226 Difference]: Without dead ends: 65 [2023-11-06 22:04:47,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:04:47,968 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 2 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:47,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:04:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-06 22:04:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-06 22:04:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.5) internal successors, (60), 58 states have internal predecessors, (60), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:04:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2023-11-06 22:04:47,974 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 25 [2023-11-06 22:04:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:47,974 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2023-11-06 22:04:47,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:04:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2023-11-06 22:04:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:04:47,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:47,976 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:47,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-06 22:04:48,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:48,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:48,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1606003645, now seen corresponding path program 1 times [2023-11-06 22:04:48,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:48,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733548696] [2023-11-06 22:04:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:48,177 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 22:04:48,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:48,178 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:48,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:04:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:48,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:04:48,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:48,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:04:48,363 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:04:48,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:04:48,440 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 22:04:48,551 INFO L322 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-06 22:04:48,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2023-11-06 22:04:48,665 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:04:48,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2023-11-06 22:04:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:04:48,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:48,813 INFO L322 Elim1Store]: treesize reduction 7, result has 68.2 percent of original size [2023-11-06 22:04:48,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 68 [2023-11-06 22:04:48,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:04:48,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733548696] [2023-11-06 22:04:48,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733548696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:48,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [727999341] [2023-11-06 22:04:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:48,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:04:48,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:04:48,888 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:04:48,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-06 22:04:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:49,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:04:49,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:49,090 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 22:04:49,214 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:04:49,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:04:49,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:04:51,373 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5|)))) is different from true [2023-11-06 22:04:51,495 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:04:51,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-06 22:04:51,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-06 22:04:51,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-11-06 22:04:51,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:51,610 INFO L322 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2023-11-06 22:04:51,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2023-11-06 22:04:51,620 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_193 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_193) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) is different from false [2023-11-06 22:04:51,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [727999341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:51,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:04:51,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2023-11-06 22:04:51,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440482284] [2023-11-06 22:04:51,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:04:51,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:04:51,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:04:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:04:51,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=450, Unknown=2, NotChecked=86, Total=600 [2023-11-06 22:04:51,641 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:04:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:59,357 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2023-11-06 22:04:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:04:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2023-11-06 22:04:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:59,359 INFO L225 Difference]: With dead ends: 88 [2023-11-06 22:04:59,359 INFO L226 Difference]: Without dead ends: 88 [2023-11-06 22:04:59,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=214, Invalid=1349, Unknown=5, NotChecked=154, Total=1722 [2023-11-06 22:04:59,362 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 160 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:59,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 460 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 638 Invalid, 0 Unknown, 87 Unchecked, 1.0s Time] [2023-11-06 22:04:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-06 22:04:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2023-11-06 22:04:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 60 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:04:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2023-11-06 22:04:59,367 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 28 [2023-11-06 22:04:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:59,368 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2023-11-06 22:04:59,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:04:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2023-11-06 22:04:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:04:59,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:59,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:59,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-11-06 22:04:59,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:59,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:59,773 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:04:59,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1606003646, now seen corresponding path program 1 times [2023-11-06 22:04:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:04:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212009850] [2023-11-06 22:04:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:59,775 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 22:04:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:04:59,776 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:04:59,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:04:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:59,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:04:59,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:59,901 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 22:04:59,987 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:04:59,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:05:00,017 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:00,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:05:00,308 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:05:00,309 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 22:05:00,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-06 22:05:00,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:05:00,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:05:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:00,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:00,696 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:05:00,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2023-11-06 22:05:00,789 WARN L839 $PredicateComparison]: unable to prove that (and (or (forall ((v_prenex_5 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_prenex_5) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv4 32)) (_ bv0 32))) (forall ((v_ArrVal_217 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_217) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_ULTIMATE.start_entry_point_#t~mem51#1.base|))) (forall ((v_ArrVal_216 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_216) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_prenex_5 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_prenex_5) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv4 32)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset|)))) is different from false [2023-11-06 22:05:00,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212009850] [2023-11-06 22:05:00,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212009850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2029973881] [2023-11-06 22:05:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:00,838 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:05:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:05:00,839 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:05:00,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-11-06 22:05:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:01,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:05:01,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:01,032 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 22:05:01,081 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:05:01,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:05:01,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:05:01,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:01,343 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:05:01,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 22:05:01,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-06 22:05:01,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:05:01,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:05:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:01,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:01,506 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:05:01,506 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2023-11-06 22:05:01,592 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_7 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_prenex_7) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset|))) (forall ((v_ArrVal_240 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_240) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (or (forall ((v_prenex_7 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_prenex_7) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (forall ((v_ArrVal_241 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_241) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) is different from false [2023-11-06 22:05:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2029973881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:01,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:01,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2023-11-06 22:05:01,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235477735] [2023-11-06 22:05:01,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:05:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:05:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=178, Unknown=2, NotChecked=54, Total=272 [2023-11-06 22:05:01,642 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:05:03,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:06,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:08,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:10,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:12,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:12,968 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2023-11-06 22:05:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:05:12,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2023-11-06 22:05:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:12,971 INFO L225 Difference]: With dead ends: 95 [2023-11-06 22:05:12,971 INFO L226 Difference]: Without dead ends: 93 [2023-11-06 22:05:12,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=497, Unknown=2, NotChecked=94, Total=702 [2023-11-06 22:05:12,973 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 90 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:12,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 316 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 426 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time] [2023-11-06 22:05:12,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-06 22:05:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2023-11-06 22:05:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2023-11-06 22:05:12,979 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 28 [2023-11-06 22:05:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:12,980 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2023-11-06 22:05:12,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:05:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2023-11-06 22:05:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:05:12,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:12,982 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:12,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:13,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:13,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:13,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:13,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1476244126, now seen corresponding path program 1 times [2023-11-06 22:05:13,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:13,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496308749] [2023-11-06 22:05:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:13,394 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 22:05:13,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:13,396 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:13,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:05:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:13,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:05:13,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:05:13,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:13,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:13,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496308749] [2023-11-06 22:05:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496308749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:13,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:13,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:05:13,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250979944] [2023-11-06 22:05:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:13,513 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:13,652 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2023-11-06 22:05:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:05:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2023-11-06 22:05:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:13,654 INFO L225 Difference]: With dead ends: 68 [2023-11-06 22:05:13,654 INFO L226 Difference]: Without dead ends: 68 [2023-11-06 22:05:13,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:13,655 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:13,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 86 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:05:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-06 22:05:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-06 22:05:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-11-06 22:05:13,660 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 30 [2023-11-06 22:05:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:13,661 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-11-06 22:05:13,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-11-06 22:05:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:05:13,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:13,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:13,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:13,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:13,881 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:13,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:13,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1476244127, now seen corresponding path program 1 times [2023-11-06 22:05:13,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:13,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705774718] [2023-11-06 22:05:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:13,882 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 22:05:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:13,883 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:13,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:05:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:13,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:05:13,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:05:14,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:14,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-06 22:05:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:05:14,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705774718] [2023-11-06 22:05:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705774718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:14,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:14,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-06 22:05:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792675620] [2023-11-06 22:05:14,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:14,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:05:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:05:14,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:05:14,485 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:05:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:14,988 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2023-11-06 22:05:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:14,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2023-11-06 22:05:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:14,990 INFO L225 Difference]: With dead ends: 67 [2023-11-06 22:05:14,990 INFO L226 Difference]: Without dead ends: 67 [2023-11-06 22:05:14,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:05:14,991 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 101 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:14,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 230 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:05:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-06 22:05:14,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-06 22:05:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2023-11-06 22:05:14,996 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 30 [2023-11-06 22:05:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:14,996 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2023-11-06 22:05:14,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:05:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2023-11-06 22:05:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:05:14,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:14,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:15,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:15,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:15,204 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:15,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:15,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1481073420, now seen corresponding path program 1 times [2023-11-06 22:05:15,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:15,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650254156] [2023-11-06 22:05:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:15,205 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 22:05:15,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:15,207 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:15,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:05:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:15,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:05:15,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:15,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:15,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:05:15,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:05:15,649 INFO L322 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2023-11-06 22:05:15,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2023-11-06 22:05:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:05:15,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:15,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650254156] [2023-11-06 22:05:15,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650254156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:15,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:15,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:05:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151916919] [2023-11-06 22:05:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:15,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:05:15,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:05:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:05:15,727 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:05:18,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:18,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:18,149 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2023-11-06 22:05:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:05:18,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-11-06 22:05:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:18,151 INFO L225 Difference]: With dead ends: 79 [2023-11-06 22:05:18,151 INFO L226 Difference]: Without dead ends: 79 [2023-11-06 22:05:18,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:05:18,152 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 91 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:18,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 234 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:05:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-06 22:05:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2023-11-06 22:05:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-11-06 22:05:18,161 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 31 [2023-11-06 22:05:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:18,161 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-11-06 22:05:18,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:05:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-11-06 22:05:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:05:18,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:18,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:18,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:18,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:18,376 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:18,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1481072329, now seen corresponding path program 1 times [2023-11-06 22:05:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767034715] [2023-11-06 22:05:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:18,377 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 22:05:18,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:18,378 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:18,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:05:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:18,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:05:18,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:18,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:05:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:05:18,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:18,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767034715] [2023-11-06 22:05:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767034715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:18,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:05:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413461854] [2023-11-06 22:05:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:18,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:05:18,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:18,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:05:18,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:05:18,546 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:18,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:18,811 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2023-11-06 22:05:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:18,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2023-11-06 22:05:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:18,812 INFO L225 Difference]: With dead ends: 71 [2023-11-06 22:05:18,812 INFO L226 Difference]: Without dead ends: 71 [2023-11-06 22:05:18,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:05:18,813 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:18,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 162 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:05:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-06 22:05:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2023-11-06 22:05:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2023-11-06 22:05:18,818 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 31 [2023-11-06 22:05:18,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:18,818 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2023-11-06 22:05:18,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2023-11-06 22:05:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:05:18,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:18,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:18,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:19,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:19,024 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:19,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1481072328, now seen corresponding path program 1 times [2023-11-06 22:05:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:19,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354832486] [2023-11-06 22:05:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:19,031 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 22:05:19,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:19,032 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:19,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:05:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:19,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:05:19,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:19,332 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-11-06 22:05:19,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-11-06 22:05:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:05:19,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:19,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354832486] [2023-11-06 22:05:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354832486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:19,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:05:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173450410] [2023-11-06 22:05:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:05:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:05:19,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:05:19,402 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:20,185 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2023-11-06 22:05:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:20,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2023-11-06 22:05:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:20,187 INFO L225 Difference]: With dead ends: 75 [2023-11-06 22:05:20,187 INFO L226 Difference]: Without dead ends: 75 [2023-11-06 22:05:20,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:05:20,188 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 18 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:20,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 177 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:05:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-06 22:05:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2023-11-06 22:05:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 58 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2023-11-06 22:05:20,193 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 31 [2023-11-06 22:05:20,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:20,193 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2023-11-06 22:05:20,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2023-11-06 22:05:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:05:20,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:20,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:20,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:20,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:20,395 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:20,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1331364346, now seen corresponding path program 1 times [2023-11-06 22:05:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575434016] [2023-11-06 22:05:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:20,396 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 22:05:20,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:20,398 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:20,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:05:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:20,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:05:20,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:20,542 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 22:05:20,617 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:05:20,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:05:20,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:20,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:22,736 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_14| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_20| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_20|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_14|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_20|))) is different from true [2023-11-06 22:05:22,950 INFO L322 Elim1Store]: treesize reduction 80, result has 25.2 percent of original size [2023-11-06 22:05:22,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 77 [2023-11-06 22:05:22,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 41 [2023-11-06 22:05:23,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-11-06 22:05:23,107 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:05:23,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2023-11-06 22:05:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:05:23,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:24,978 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret52#1.base_32| (_ BitVec 32))) (or (forall ((v_ArrVal_359 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base|) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset| |v_ULTIMATE.start_entry_point_#t~ret52#1.base_32|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_359) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv0 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret52#1.base_32| (_ bv0 32)))) is different from false [2023-11-06 22:05:24,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:24,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575434016] [2023-11-06 22:05:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575434016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1116294849] [2023-11-06 22:05:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:24,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:05:24,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:05:24,983 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:05:24,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-11-06 22:05:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:25,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:05:25,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:25,199 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 22:05:25,292 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:05:25,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:05:25,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:25,827 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:05:25,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2023-11-06 22:05:25,867 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:05:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:25,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:26,048 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_382 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_382) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2023-11-06 22:05:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1116294849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:26,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2023-11-06 22:05:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163121617] [2023-11-06 22:05:26,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:05:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:26,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:05:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=537, Unknown=6, NotChecked=144, Total=756 [2023-11-06 22:05:26,060 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:05:28,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:29,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:33,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:35,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:38,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:40,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:42,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:05:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:42,439 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2023-11-06 22:05:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:05:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2023-11-06 22:05:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:42,441 INFO L225 Difference]: With dead ends: 96 [2023-11-06 22:05:42,442 INFO L226 Difference]: Without dead ends: 96 [2023-11-06 22:05:42,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=200, Invalid=1288, Unknown=6, NotChecked=228, Total=1722 [2023-11-06 22:05:42,443 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 75 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 24 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:42,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 488 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 717 Invalid, 6 Unknown, 95 Unchecked, 15.5s Time] [2023-11-06 22:05:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-06 22:05:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2023-11-06 22:05:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 63 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2023-11-06 22:05:42,449 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 32 [2023-11-06 22:05:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:42,449 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2023-11-06 22:05:42,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:05:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2023-11-06 22:05:42,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:05:42,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:42,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:42,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:42,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:42,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:05:42,861 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:42,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1548295403, now seen corresponding path program 1 times [2023-11-06 22:05:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:42,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932168108] [2023-11-06 22:05:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:42,862 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 22:05:42,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:42,863 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:42,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 22:05:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:42,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:05:42,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:43,000 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:05:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:05:43,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:43,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:43,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932168108] [2023-11-06 22:05:43,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932168108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:43,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:43,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:43,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529638965] [2023-11-06 22:05:43,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:43,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:43,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:43,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:43,020 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:43,276 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2023-11-06 22:05:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:05:43,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-06 22:05:43,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:43,278 INFO L225 Difference]: With dead ends: 73 [2023-11-06 22:05:43,278 INFO L226 Difference]: Without dead ends: 73 [2023-11-06 22:05:43,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:05:43,279 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:43,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 133 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:05:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-06 22:05:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-06 22:05:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 64 states have internal predecessors, (67), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:05:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2023-11-06 22:05:43,284 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 33 [2023-11-06 22:05:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:43,285 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2023-11-06 22:05:43,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:05:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2023-11-06 22:05:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:05:43,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:43,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:43,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:43,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:43,492 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:05:43,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1617154909, now seen corresponding path program 1 times [2023-11-06 22:05:43,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:43,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296362826] [2023-11-06 22:05:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:43,493 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 22:05:43,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:43,494 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:05:43,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-06 22:05:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:43,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:05:43,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:43,655 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 22:05:43,740 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:05:43,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:05:43,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:45,870 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)))) is different from true [2023-11-06 22:05:45,881 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 22:05:48,111 INFO L322 Elim1Store]: treesize reduction 80, result has 25.2 percent of original size [2023-11-06 22:05:48,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 80 [2023-11-06 22:05:48,124 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 44 [2023-11-06 22:05:48,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-11-06 22:05:48,388 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:05:48,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2023-11-06 22:05:48,578 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:05:48,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:05:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2023-11-06 22:05:48,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:53,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 76 [2023-11-06 22:05:53,526 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_424 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_entry_point_#t~ret52#1.base_38| (_ BitVec 32))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base|) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset| |v_ULTIMATE.start_entry_point_#t~ret52#1.base_38|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_424) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) |v_ULTIMATE.start_entry_point_#t~ret52#1.base_38|)) is different from false [2023-11-06 22:05:53,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296362826] [2023-11-06 22:05:53,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296362826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:53,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1157794041] [2023-11-06 22:05:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:53,531 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:05:53,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:05:53,533 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:05:53,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-06 22:05:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:53,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 22:05:53,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:53,864 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 22:05:56,090 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:05:56,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:05:56,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:56,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:58,410 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_26| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_26|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_26|))) is different from true [2023-11-06 22:05:58,417 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 22:06:04,801 INFO L322 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2023-11-06 22:06:04,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 80 [2023-11-06 22:06:04,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 44 [2023-11-06 22:06:05,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-11-06 22:06:07,582 INFO L322 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2023-11-06 22:06:07,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 46 [2023-11-06 22:06:07,671 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:06:07,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:06:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2023-11-06 22:06:07,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:10,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 76 [2023-11-06 22:06:10,221 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret52#1.base_41| (_ BitVec 32)) (v_ArrVal_424 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret52#1.base_41| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base|) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset| |v_ULTIMATE.start_entry_point_#t~ret52#1.base_41|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_424) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2023-11-06 22:06:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1157794041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:10,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:06:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2023-11-06 22:06:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528219302] [2023-11-06 22:06:10,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:06:10,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:06:10,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:06:10,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=949, Unknown=17, NotChecked=260, Total=1332 [2023-11-06 22:06:10,227 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-06 22:06:12,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:14,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:20,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:22,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:29,765 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2023-11-06 22:06:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:06:29,766 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 37 [2023-11-06 22:06:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:29,768 INFO L225 Difference]: With dead ends: 83 [2023-11-06 22:06:29,768 INFO L226 Difference]: Without dead ends: 83 [2023-11-06 22:06:29,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=257, Invalid=1900, Unknown=21, NotChecked=372, Total=2550 [2023-11-06 22:06:29,770 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 33 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:29,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 454 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 770 Invalid, 4 Unknown, 168 Unchecked, 10.2s Time] [2023-11-06 22:06:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-06 22:06:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-11-06 22:06:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.290909090909091) internal successors, (71), 67 states have internal predecessors, (71), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-06 22:06:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2023-11-06 22:06:29,775 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 37 [2023-11-06 22:06:29,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:29,775 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2023-11-06 22:06:29,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-06 22:06:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2023-11-06 22:06:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:06:29,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:29,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:29,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:29,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:30,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:06:30,177 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:06:30,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1617154908, now seen corresponding path program 1 times [2023-11-06 22:06:30,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:06:30,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197518794] [2023-11-06 22:06:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:30,178 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 22:06:30,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:06:30,179 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:06:30,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-06 22:06:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:30,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:06:30,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:30,358 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 22:06:30,439 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:06:30,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:06:30,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:06:32,581 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_19| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_19|)))) is different from true [2023-11-06 22:06:32,627 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 22:06:32,640 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 22:06:32,927 INFO L322 Elim1Store]: treesize reduction 80, result has 25.2 percent of original size [2023-11-06 22:06:32,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 100 [2023-11-06 22:06:32,942 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 69 [2023-11-06 22:06:33,319 INFO L322 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-06 22:06:33,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 34 [2023-11-06 22:06:33,460 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-06 22:06:33,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:33,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:06:33,501 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:06:33,501 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:06:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2023-11-06 22:06:33,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:39,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:06:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197518794] [2023-11-06 22:06:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197518794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1447845287] [2023-11-06 22:06:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:39,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:06:39,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:06:39,582 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:06:39,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-06 22:06:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:39,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-06 22:06:39,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:39,873 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 22:06:40,160 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:06:40,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:06:40,254 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:06:40,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:06:40,814 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 22:06:40,829 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 22:06:41,299 INFO L322 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-11-06 22:06:41,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 72 [2023-11-06 22:06:41,337 INFO L322 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-11-06 22:06:41,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 32 [2023-11-06 22:06:42,075 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:06:42,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 30 [2023-11-06 22:06:42,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,130 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:06:42,148 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:06:42,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:06:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-11-06 22:06:42,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:44,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1447845287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:44,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:06:44,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2023-11-06 22:06:44,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226419673] [2023-11-06 22:06:44,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:44,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:06:44,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:06:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:06:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1082, Unknown=3, NotChecked=134, Total=1332 [2023-11-06 22:06:44,469 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 35 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-06 22:06:46,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:48,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:52,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:54,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:59,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:01,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:03,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:05,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:07,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:09,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:09,939 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2023-11-06 22:07:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:07:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 37 [2023-11-06 22:07:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:09,942 INFO L225 Difference]: With dead ends: 102 [2023-11-06 22:07:09,942 INFO L226 Difference]: Without dead ends: 102 [2023-11-06 22:07:09,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=259, Invalid=2097, Unknown=4, NotChecked=190, Total=2550 [2023-11-06 22:07:09,944 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 134 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 38 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:09,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 561 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 880 Invalid, 10 Unknown, 201 Unchecked, 22.1s Time] [2023-11-06 22:07:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-06 22:07:09,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 77. [2023-11-06 22:07:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-06 22:07:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2023-11-06 22:07:09,952 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 37 [2023-11-06 22:07:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:09,952 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2023-11-06 22:07:09,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-06 22:07:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2023-11-06 22:07:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:07:09,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:09,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:09,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:10,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:10,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:07:10,354 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:07:10,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1614444768, now seen corresponding path program 1 times [2023-11-06 22:07:10,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:10,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275090685] [2023-11-06 22:07:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:10,355 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 22:07:10,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:10,356 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:07:10,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-06 22:07:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:10,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:07:10,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:10,556 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2023-11-06 22:07:10,609 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (not (= |ldv_malloc_#res.base| (_ bv0 32))))) is different from true [2023-11-06 22:07:10,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2023-11-06 22:07:10,944 INFO L322 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2023-11-06 22:07:10,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2023-11-06 22:07:10,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-06 22:07:11,081 INFO L322 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2023-11-06 22:07:11,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2023-11-06 22:07:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2023-11-06 22:07:11,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:07:11,398 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:07:11,412 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:07:11,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2023-11-06 22:07:11,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:07:11,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275090685] [2023-11-06 22:07:11,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275090685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:07:11,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1651269354] [2023-11-06 22:07:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:11,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:07:11,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:07:11,637 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:07:11,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-11-06 22:07:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:11,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:07:11,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:11,927 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 22:07:12,075 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:07:12,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:07:12,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:07:12,273 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-06 22:07:14,515 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:07:14,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-06 22:07:14,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 22:07:14,647 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:07:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:14,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:07:14,782 WARN L839 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_entry_point_~a10~0#1.base|))) (forall ((v_ArrVal_567 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_567) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_ULTIMATE.start_entry_point_~a10~0#1.base|)))) is different from false [2023-11-06 22:07:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1651269354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:07:14,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:07:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-11-06 22:07:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337954362] [2023-11-06 22:07:14,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:07:14,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:07:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:07:14,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:07:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=697, Unknown=3, NotChecked=110, Total=930 [2023-11-06 22:07:14,807 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:07:16,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:20,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:23,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:26,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:26,463 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2023-11-06 22:07:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:07:26,464 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2023-11-06 22:07:26,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:26,464 INFO L225 Difference]: With dead ends: 80 [2023-11-06 22:07:26,465 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 22:07:26,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=276, Invalid=1533, Unknown=5, NotChecked=166, Total=1980 [2023-11-06 22:07:26,466 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:26,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 262 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 589 Invalid, 3 Unknown, 67 Unchecked, 7.0s Time] [2023-11-06 22:07:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 22:07:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-06 22:07:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 70 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-06 22:07:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2023-11-06 22:07:26,471 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 36 [2023-11-06 22:07:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:26,472 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2023-11-06 22:07:26,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:07:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2023-11-06 22:07:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:07:26,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:26,473 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:26,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:26,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:26,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:07:26,881 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:07:26,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2127689086, now seen corresponding path program 1 times [2023-11-06 22:07:26,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:26,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964956523] [2023-11-06 22:07:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:26,882 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 22:07:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:26,883 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:07:26,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-06 22:07:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:27,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:07:27,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:27,085 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 22:07:27,176 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:07:27,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:07:27,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:07:29,328 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25|)))) is different from true [2023-11-06 22:07:29,616 INFO L322 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2023-11-06 22:07:29,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 64 [2023-11-06 22:07:29,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 52 [2023-11-06 22:07:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:07:29,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:07:32,656 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36| (_ BitVec 32))) (let ((.cse4 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|)) (.cse5 (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse5 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32)))) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse4 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32))))) (let ((.cse1 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (.cse2 (select (select .cse6 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (or (not (= (select (select .cse0 .cse1) .cse2) (_ bv0 32))) (= (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse4 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.base|)))) (select .cse3 (select (select .cse3 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse5 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (_ bv0 32)) (not (= (select (select .cse6 .cse1) .cse2) (_ bv0 32)))))))) (forall ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36| (_ BitVec 32))) (let ((.cse12 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|)) (.cse13 (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse13 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32)))) (.cse7 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse12 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32))))) (let ((.cse8 (select (select .cse7 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (.cse9 (select (select .cse10 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (or (not (= (select (select .cse7 .cse8) .cse9) (_ bv0 32))) (not (= (select (select .cse10 .cse8) .cse9) (_ bv0 32))) (= (let ((.cse11 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse13 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.offset|)))) (select (select .cse11 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse12 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.base|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (select (select .cse11 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (_ bv0 32)))))))) is different from false [2023-11-06 22:07:32,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 112 [2023-11-06 22:07:32,936 INFO L322 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2023-11-06 22:07:32,937 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 190 [2023-11-06 22:07:33,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:07:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2023-11-06 22:07:33,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:07:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964956523] [2023-11-06 22:07:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964956523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:07:33,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:07:33,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2023-11-06 22:07:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041394844] [2023-11-06 22:07:33,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:07:33,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:07:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:07:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:07:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=369, Unknown=2, NotChecked=78, Total=506 [2023-11-06 22:07:33,591 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:07:39,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:41,828 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36| (_ BitVec 32))) (let ((.cse4 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|)) (.cse5 (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse5 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32)))) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse4 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32))))) (let ((.cse1 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (.cse2 (select (select .cse6 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (or (not (= (select (select .cse0 .cse1) .cse2) (_ bv0 32))) (= (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse4 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.base|)))) (select .cse3 (select (select .cse3 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse5 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (_ bv0 32)) (not (= (select (select .cse6 .cse1) .cse2) (_ bv0 32)))))))) (= |c_#valid| |c_old(#valid)|) (forall ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36| (_ BitVec 32))) (let ((.cse12 (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|)) (.cse13 (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17|))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse13 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32)))) (.cse7 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse12 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| (_ bv0 32))))) (let ((.cse8 (select (select .cse7 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (.cse9 (select (select .cse10 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (or (not (= (select (select .cse7 .cse8) .cse9) (_ bv0 32))) (not (= (select (select .cse10 .cse8) .cse9) (_ bv0 32))) (= (let ((.cse11 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse13 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.offset|)))) (select (select .cse11 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem51#1.base_BEFORE_CALL_17| (store .cse12 |v_ULTIMATE.start_entry_point_#t~mem51#1.offset_BEFORE_CALL_13| |c_ldv_malloc_#res.base|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|)) (select (select .cse11 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_26|))) (_ bv0 32)))))))) is different from false [2023-11-06 22:07:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:42,602 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2023-11-06 22:07:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:07:42,603 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2023-11-06 22:07:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:42,604 INFO L225 Difference]: With dead ends: 81 [2023-11-06 22:07:42,604 INFO L226 Difference]: Without dead ends: 81 [2023-11-06 22:07:42,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=157, Invalid=907, Unknown=4, NotChecked=192, Total=1260 [2023-11-06 22:07:42,606 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 62 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:42,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 390 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 601 Invalid, 1 Unknown, 179 Unchecked, 4.0s Time] [2023-11-06 22:07:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-06 22:07:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2023-11-06 22:07:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 65 states have internal predecessors, (67), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:07:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-11-06 22:07:42,612 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 37 [2023-11-06 22:07:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:42,612 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-11-06 22:07:42,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:07:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-11-06 22:07:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 22:07:42,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:42,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:42,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:42,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:07:42,829 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-06 22:07:42,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash -998224317, now seen corresponding path program 1 times [2023-11-06 22:07:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594837300] [2023-11-06 22:07:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:42,830 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 22:07:42,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:42,832 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 22:07:42,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-06 22:07:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:42,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 22:07:42,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:43,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-06 22:07:43,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:07:44,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:07:44,276 INFO L322 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2023-11-06 22:07:44,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 170 [2023-11-06 22:07:44,366 INFO L322 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-06 22:07:44,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 51 [2023-11-06 22:07:44,380 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 22:07:45,041 INFO L322 Elim1Store]: treesize reduction 24, result has 56.4 percent of original size [2023-11-06 22:07:45,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 98 [2023-11-06 22:07:45,835 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:07:45,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 35 [2023-11-06 22:07:48,308 WARN L861 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((v_DerPreprocessor_5 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~mem57#1.base_17| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_#t~mem57#1.base_17| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)) (not (= |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 32))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| v_DerPreprocessor_5) |v_ULTIMATE.start_entry_point_#t~mem57#1.base_17| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base|)) |v_ULTIMATE.start_entry_point_#t~mem57#1.base_17| (_ bv1 1)) |ULTIMATE.start_entry_point_~a10~0#1.base|)) |v_ULTIMATE.start_entry_point_#t~mem57#1.base_17|)) (not (= |v_ULTIMATE.start_entry_point_#t~mem57#1.base_17| (_ bv0 32)))))) is different from true [2023-11-06 22:07:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:07:48,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:07:49,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-06 22:08:09,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:08:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594837300] [2023-11-06 22:08:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594837300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [187301967] [2023-11-06 22:08:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:09,769 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:08:09,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:08:09,770 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:08:09,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07003648-9b6a-4f56-bc88-5e05b191980b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-11-06 22:08:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:10,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:08:10,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:10,845 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:08:11,304 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-06 22:08:11,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2023-11-06 22:08:17,722 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:08:17,723 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2023-11-06 22:08:17,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-11-06 22:08:20,348 WARN L861 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_#t~mem57#1.base_20| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_#t~mem57#1.base_20| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1)) |c_#valid|) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv1 1)) |v_ULTIMATE.start_entry_point_#t~mem57#1.base_20|) (_ bv0 1)))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)))) is different from true [2023-11-06 22:08:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:08:20,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:20,424 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store (store |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_645) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv0 1)) |c_ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|)) is different from false [2023-11-06 22:08:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [187301967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:20,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:20,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2023-11-06 22:08:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242434628] [2023-11-06 22:08:20,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:20,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 22:08:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:08:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 22:08:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1546, Unknown=17, NotChecked=246, Total=1980 [2023-11-06 22:08:20,449 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:08:22,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:08:26,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:08:29,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]