./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:06,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:06,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:51:06,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:06,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:06,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:06,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:06,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:06,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:06,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:06,185 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:06,186 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:06,187 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:06,188 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:06,188 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:06,189 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:06,190 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:06,191 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:06,192 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:06,192 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:06,193 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:06,198 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:06,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:06,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:06,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:06,204 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:06,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:06,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:06,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:06,206 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:06,206 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:06,207 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:51:06,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:06,208 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:06,208 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:06,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:06,208 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:06,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:06,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:06,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:06,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:06,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:06,211 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:06,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:06,212 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:06,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:06,212 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2023-11-19 04:51:06,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:06,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:06,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:06,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:06,612 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:06,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-19 04:51:10,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:10,373 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:10,374 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-19 04:51:10,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data/dd38eeea7/543ec5492b8849d9b431d7b94a134b68/FLAGf668f3e95 [2023-11-19 04:51:10,404 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data/dd38eeea7/543ec5492b8849d9b431d7b94a134b68 [2023-11-19 04:51:10,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:10,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:10,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:10,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:10,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:10,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:10" (1/1) ... [2023-11-19 04:51:10,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3131946c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:10, skipping insertion in model container [2023-11-19 04:51:10,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:10" (1/1) ... [2023-11-19 04:51:10,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:10,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:10,759 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 04:51:10,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c057960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:10, skipping insertion in model container [2023-11-19 04:51:10,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:10,761 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:51:10,763 INFO L158 Benchmark]: Toolchain (without parser) took 352.20ms. Allocated memory is still 146.8MB. Free memory was 101.9MB in the beginning and 91.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:51:10,763 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 146.8MB. Free memory is still 120.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:51:10,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.83ms. Allocated memory is still 146.8MB. Free memory was 101.9MB in the beginning and 91.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:51:10,766 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 146.8MB. Free memory is still 120.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.83ms. Allocated memory is still 146.8MB. Free memory was 101.9MB in the beginning and 91.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 145]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:13,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:13,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:51:13,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:13,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:13,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:13,833 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:13,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:13,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:13,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:13,842 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:13,843 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:13,843 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:13,845 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:13,846 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:13,846 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:13,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:13,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:13,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:13,850 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:13,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:13,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:13,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:13,852 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:13,853 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:13,853 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:51:13,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:13,854 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:13,854 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:51:13,855 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:51:13,857 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:13,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:13,857 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:13,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:13,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:51:13,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:13,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:13,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:13,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:13,861 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:51:13,861 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:51:13,861 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:13,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:13,862 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2023-11-19 04:51:14,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:14,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:14,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:14,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:14,387 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:14,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-19 04:51:18,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:18,341 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:18,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-19 04:51:18,363 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data/72f3518cb/8a0f0a39377544d99206e18d5c27ee00/FLAG89b04d2dd [2023-11-19 04:51:18,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/data/72f3518cb/8a0f0a39377544d99206e18d5c27ee00 [2023-11-19 04:51:18,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:18,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:18,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:18,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:18,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:18,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:18" (1/1) ... [2023-11-19 04:51:18,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f47212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:18, skipping insertion in model container [2023-11-19 04:51:18,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:18" (1/1) ... [2023-11-19 04:51:18,469 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:18,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:18,840 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:51:18,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:18,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:18,930 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:18,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:19,014 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:19,015 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:19,024 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:19,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19 WrapperNode [2023-11-19 04:51:19,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:19,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:19,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:19,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:19,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,126 INFO L138 Inliner]: procedures = 29, calls = 69, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 303 [2023-11-19 04:51:19,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:19,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:19,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:19,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:19,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:51:19,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:51:19,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:51:19,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:51:19,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (1/1) ... [2023-11-19 04:51:19,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:19,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:19,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:51:19,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:51:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:51:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:51:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:51:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:51:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 04:51:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 04:51:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 04:51:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 04:51:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 04:51:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 04:51:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 04:51:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 04:51:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:51:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:51:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:51:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:51:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:51:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:51:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:51:19,292 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:51:19,445 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:51:19,447 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:51:20,461 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:51:20,903 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:51:20,904 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 04:51:20,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:20 BoogieIcfgContainer [2023-11-19 04:51:20,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:51:20,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:51:20,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:51:20,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:51:20,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:18" (1/3) ... [2023-11-19 04:51:20,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb4a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:20, skipping insertion in model container [2023-11-19 04:51:20,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:19" (2/3) ... [2023-11-19 04:51:20,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb4a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:20, skipping insertion in model container [2023-11-19 04:51:20,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:20" (3/3) ... [2023-11-19 04:51:20,929 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-11-19 04:51:20,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:51:20,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 04:51:20,957 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:51:21,142 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 04:51:21,204 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:51:21,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 244 transitions, 516 flow [2023-11-19 04:51:21,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 244 transitions, 516 flow [2023-11-19 04:51:21,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 244 transitions, 516 flow [2023-11-19 04:51:21,425 INFO L124 PetriNetUnfolderBase]: 15/240 cut-off events. [2023-11-19 04:51:21,425 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 04:51:21,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 240 events. 15/240 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 182. Up to 2 conditions per place. [2023-11-19 04:51:21,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 4576 [2023-11-19 04:51:59,456 WARN L293 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 119 DAG size of output: 111 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 04:52:00,000 INFO L134 LiptonReduction]: Checked pairs total: 8856 [2023-11-19 04:52:00,000 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-11-19 04:52:00,009 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 67 transitions, 162 flow [2023-11-19 04:52:00,479 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7258 states, 6854 states have (on average 4.742777939889116) internal successors, (32507), 7257 states have internal predecessors, (32507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:00,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:52:00,506 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=FINITE_AUTOMATA, 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;@48d584c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:52:00,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-19 04:52:00,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 7258 states, 6854 states have (on average 4.742777939889116) internal successors, (32507), 7257 states have internal predecessors, (32507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:52:00,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:00,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:52:00,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-19 04:52:00,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash 40732, now seen corresponding path program 1 times [2023-11-19 04:52:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:00,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740512527] [2023-11-19 04:52:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:00,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:00,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:52:00,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f84ec5f-1c19-4b06-9202-85da24f2e7e9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:52:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:00,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:52:00,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-19 04:52:01,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,039 INFO L378 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 15 treesize of output 11 [2023-11-19 04:52:01,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-19 04:52:01,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-19 04:52:01,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-19 04:52:01,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 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 [2023-11-19 04:52:01,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-19 04:52:01,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,281 INFO L378 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 15 treesize of output 11 [2023-11-19 04:52:01,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-19 04:52:01,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-19 04:52:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 5 [2023-11-19 04:52:01,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-19 04:52:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-19 04:52:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,549 INFO L378 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 15 treesize of output 11 [2023-11-19 04:52:01,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-19 04:52:01,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:52:01,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-19 04:52:01,673 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:52:01,682 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:52:01,693 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 04:52:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:01,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:01,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:01,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740512527] [2023-11-19 04:52:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740512527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:01,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:52:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556062969] [2023-11-19 04:52:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:01,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:01,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:01,765 INFO L87 Difference]: Start difference. First operand has 7258 states, 6854 states have (on average 4.742777939889116) internal successors, (32507), 7257 states have internal predecessors, (32507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:02,226 INFO L93 Difference]: Finished difference Result 5960 states and 26025 transitions. [2023-11-19 04:52:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:02,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-19 04:52:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:02,376 INFO L225 Difference]: With dead ends: 5960 [2023-11-19 04:52:02,376 INFO L226 Difference]: Without dead ends: 5960 [2023-11-19 04:52:02,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:02,381 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:02,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:52:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2023-11-19 04:52:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 5960. [2023-11-19 04:52:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5639 states have (on average 4.615179996453272) internal successors, (26025), 5959 states have internal predecessors, (26025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)