./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:08:25,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:08:25,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:08:25,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:08:25,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:08:25,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:08:25,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:08:25,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:08:25,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:08:25,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:08:25,814 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:08:25,816 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:08:25,816 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:08:25,818 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:08:25,819 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:08:25,819 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:08:25,820 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:08:25,822 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:08:25,823 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:08:25,823 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:08:25,824 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:08:25,824 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:08:25,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:08:25,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:08:25,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:08:25,827 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:08:25,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:08:25,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:08:25,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:08:25,829 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:08:25,831 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:08:25,831 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:08:25,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:08:25,831 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:08:25,832 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:08:25,832 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:08:25,832 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:08:25,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:08:25,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:08:25,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:25,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:08:25,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:08:25,834 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:08:25,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:08:25,835 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:08:25,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:08:25,836 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_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2023-11-12 00:08:26,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:08:26,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:08:26,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:08:26,191 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:08:26,192 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:08:26,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-11-12 00:08:29,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:08:29,705 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:08:29,706 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-11-12 00:08:29,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data/a38176406/6328f4ca64d641e99f4e24cc63d70829/FLAG051121fd3 [2023-11-12 00:08:29,767 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data/a38176406/6328f4ca64d641e99f4e24cc63d70829 [2023-11-12 00:08:29,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:08:29,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:08:29,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:29,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:08:29,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:08:29,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:29" (1/1) ... [2023-11-12 00:08:29,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b59753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:29, skipping insertion in model container [2023-11-12 00:08:29,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:29" (1/1) ... [2023-11-12 00:08:29,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:30,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:30,503 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) [2023-11-12 00:08:30,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@18b93c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:30, skipping insertion in model container [2023-11-12 00:08:30,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:30,505 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:08:30,508 INFO L158 Benchmark]: Toolchain (without parser) took 735.28ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 74.4MB in the beginning and 148.4MB in the end (delta: -73.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:08:30,509 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 138.4MB. Free memory was 112.8MB in the beginning and 112.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:08:30,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 732.39ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 74.1MB in the beginning and 148.4MB in the end (delta: -74.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:08:30,513 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 138.4MB. Free memory was 112.8MB in the beginning and 112.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 732.39ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 74.1MB in the beginning and 148.4MB in the end (delta: -74.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:08:33,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:08:33,222 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:08:33,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:08:33,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:08:33,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:08:33,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:08:33,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:08:33,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:08:33,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:08:33,299 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:08:33,300 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:08:33,300 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:08:33,302 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:08:33,302 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:08:33,303 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:08:33,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:08:33,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:08:33,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:08:33,306 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:08:33,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:08:33,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:08:33,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:08:33,308 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:08:33,309 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:08:33,309 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:08:33,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:08:33,310 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:08:33,310 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:08:33,311 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:08:33,312 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:08:33,313 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:08:33,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:08:33,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:08:33,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:08:33,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:08:33,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:33,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:08:33,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:08:33,316 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:08:33,316 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:08:33,316 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:08:33,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:08:33,317 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_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2023-11-12 00:08:33,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:08:33,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:08:33,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:08:33,784 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:08:33,784 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:08:33,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-11-12 00:08:36,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:08:37,364 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:08:37,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-11-12 00:08:37,398 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data/121a49abc/640a0f0a1ff54d6d90b8061907a7ef6d/FLAG5a3cd9e74 [2023-11-12 00:08:37,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/data/121a49abc/640a0f0a1ff54d6d90b8061907a7ef6d [2023-11-12 00:08:37,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:08:37,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:08:37,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:37,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:08:37,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:08:37,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:37" (1/1) ... [2023-11-12 00:08:37,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c687fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:37, skipping insertion in model container [2023-11-12 00:08:37,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:37" (1/1) ... [2023-11-12 00:08:37,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:38,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:38,335 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:08:38,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:38,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:38,424 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:08:38,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:38,591 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:08:38,599 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:08:38,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38 WrapperNode [2023-11-12 00:08:38,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:38,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:38,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:08:38,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:08:38,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,771 INFO L138 Inliner]: procedures = 180, calls = 287, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1047 [2023-11-12 00:08:38,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:38,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:08:38,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:08:38,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:08:38,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:08:38,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:08:38,959 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:08:38,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:08:38,960 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (1/1) ... [2023-11-12 00:08:38,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:38,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:08:39,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:08:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 00:08:39,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 00:08:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:08:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:08:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:08:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:08:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:08:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:08:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:08:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:08:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:08:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:08:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:08:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:08:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:08:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:08:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:08:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:08:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:08:39,290 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:08:39,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:08:39,330 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:45,066 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:08:45,086 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:08:45,087 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-12 00:08:45,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:45 BoogieIcfgContainer [2023-11-12 00:08:45,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:08:45,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:08:45,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:08:45,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:08:45,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:08:37" (1/3) ... [2023-11-12 00:08:45,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a802e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:45, skipping insertion in model container [2023-11-12 00:08:45,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:38" (2/3) ... [2023-11-12 00:08:45,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a802e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:45, skipping insertion in model container [2023-11-12 00:08:45,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:45" (3/3) ... [2023-11-12 00:08:45,104 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2023-11-12 00:08:45,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:08:45,124 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 533 error locations. [2023-11-12 00:08:45,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:08:45,223 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;@2071a3b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:08:45,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 533 error locations. [2023-11-12 00:08:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 539 states have (on average 2.222634508348794) internal successors, (1198), 1076 states have internal predecessors, (1198), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:08:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:08:45,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:45,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:08:45,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:08:45,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-12 00:08:45,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:08:45,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139095110] [2023-11-12 00:08:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:45,258 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 [2023-11-12 00:08:45,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:08:45,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:08:45,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:45,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:08:45,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:08:45,553 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 [2023-11-12 00:08:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:45,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:08:45,570 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:08:45,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139095110] [2023-11-12 00:08:45,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139095110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:45,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:45,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:08:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575559391] [2023-11-12 00:08:45,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:08:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:08:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:08:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:45,619 INFO L87 Difference]: Start difference. First operand has 1083 states, 539 states have (on average 2.222634508348794) internal successors, (1198), 1076 states have internal predecessors, (1198), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:47,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:47,848 INFO L93 Difference]: Finished difference Result 1080 states and 1145 transitions. [2023-11-12 00:08:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:08:47,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:08:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:47,872 INFO L225 Difference]: With dead ends: 1080 [2023-11-12 00:08:47,873 INFO L226 Difference]: Without dead ends: 1078 [2023-11-12 00:08:47,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:47,879 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 996 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:47,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 721 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-12 00:08:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2023-11-12 00:08:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1069. [2023-11-12 00:08:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 541 states have (on average 2.0646950092421443) internal successors, (1117), 1062 states have internal predecessors, (1117), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:08:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1135 transitions. [2023-11-12 00:08:47,996 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1135 transitions. Word has length 3 [2023-11-12 00:08:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:47,997 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1135 transitions. [2023-11-12 00:08:47,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1135 transitions. [2023-11-12 00:08:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:08:47,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:47,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:08:48,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:48,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:48,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:08:48,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-12 00:08:48,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:08:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820828114] [2023-11-12 00:08:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:48,212 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 [2023-11-12 00:08:48,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:08:48,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:08:48,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:48,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:08:48,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:08:48,382 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 [2023-11-12 00:08:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:48,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:08:48,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:08:48,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820828114] [2023-11-12 00:08:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820828114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:48,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:48,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:08:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829049636] [2023-11-12 00:08:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:48,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:08:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:08:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:08:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:48,400 INFO L87 Difference]: Start difference. First operand 1069 states and 1135 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:52,187 INFO L93 Difference]: Finished difference Result 1483 states and 1590 transitions. [2023-11-12 00:08:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:08:52,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:08:52,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:52,197 INFO L225 Difference]: With dead ends: 1483 [2023-11-12 00:08:52,198 INFO L226 Difference]: Without dead ends: 1483 [2023-11-12 00:08:52,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:52,200 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 444 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:52,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1537 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-12 00:08:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-11-12 00:08:52,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1274. [2023-11-12 00:08:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 747 states have (on average 2.0535475234270417) internal successors, (1534), 1267 states have internal predecessors, (1534), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:08:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1552 transitions. [2023-11-12 00:08:52,246 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1552 transitions. Word has length 3 [2023-11-12 00:08:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:52,247 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 1552 transitions. [2023-11-12 00:08:52,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1552 transitions. [2023-11-12 00:08:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:08:52,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:52,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:52,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:52,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:52,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:08:52,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-12 00:08:52,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:08:52,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406120205] [2023-11-12 00:08:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:52,479 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 [2023-11-12 00:08:52,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:08:52,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:08:52,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:52,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:08:52,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:08:52,682 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 [2023-11-12 00:08:52,692 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 [2023-11-12 00:08:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:08:52,796 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 [2023-11-12 00:08:52,820 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:08:52,821 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 [2023-11-12 00:08:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:52,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:08:52,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:08:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406120205] [2023-11-12 00:08:52,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406120205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:52,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:52,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:08:52,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863133700] [2023-11-12 00:08:52,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:52,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:08:52,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:08:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:08:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:52,852 INFO L87 Difference]: Start difference. First operand 1274 states and 1552 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-12 00:08:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:56,301 INFO L93 Difference]: Finished difference Result 1277 states and 1557 transitions. [2023-11-12 00:08:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:08:56,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2023-11-12 00:08:56,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:56,310 INFO L225 Difference]: With dead ends: 1277 [2023-11-12 00:08:56,310 INFO L226 Difference]: Without dead ends: 1277 [2023-11-12 00:08:56,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:08:56,314 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1088 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:56,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 436 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-12 00:08:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-12 00:08:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1058. [2023-11-12 00:08:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 541 states have (on average 2.042513863216266) internal successors, (1105), 1051 states have internal predecessors, (1105), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:08:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1123 transitions. [2023-11-12 00:08:56,349 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1123 transitions. Word has length 7 [2023-11-12 00:08:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:56,350 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1123 transitions. [2023-11-12 00:08:56,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-12 00:08:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1123 transitions. [2023-11-12 00:08:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:08:56,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:56,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:56,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:56,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:56,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:08:56,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-12 00:08:56,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:08:56,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927843515] [2023-11-12 00:08:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:56,572 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 [2023-11-12 00:08:56,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:08:56,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:08:56,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:56,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:08:56,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:08:56,727 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 [2023-11-12 00:08:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:56,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:08:56,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:08:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927843515] [2023-11-12 00:08:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927843515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:56,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:08:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743849730] [2023-11-12 00:08:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:56,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:08:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:08:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:08:56,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:56,747 INFO L87 Difference]: Start difference. First operand 1058 states and 1123 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:59,448 INFO L93 Difference]: Finished difference Result 1389 states and 1484 transitions. [2023-11-12 00:08:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:08:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:08:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:59,459 INFO L225 Difference]: With dead ends: 1389 [2023-11-12 00:08:59,459 INFO L226 Difference]: Without dead ends: 1389 [2023-11-12 00:08:59,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:59,462 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 996 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:59,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1222 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 00:08:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2023-11-12 00:08:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1009. [2023-11-12 00:08:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 541 states have (on average 1.9519408502772644) internal successors, (1056), 1002 states have internal predecessors, (1056), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:08:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1074 transitions. [2023-11-12 00:08:59,494 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1074 transitions. Word has length 8 [2023-11-12 00:08:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:59,495 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1074 transitions. [2023-11-12 00:08:59,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1074 transitions. [2023-11-12 00:08:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:08:59,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:59,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:59,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:08:59,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:08:59,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-12 00:08:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:08:59,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287614898] [2023-11-12 00:08:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:59,709 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 [2023-11-12 00:08:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:08:59,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:08:59,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 00:08:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:59,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:08:59,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:08:59,874 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 [2023-11-12 00:08:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:59,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:08:59,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:08:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287614898] [2023-11-12 00:08:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287614898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:59,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:08:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871951533] [2023-11-12 00:08:59,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:59,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:08:59,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:08:59,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:08:59,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:59,914 INFO L87 Difference]: Start difference. First operand 1009 states and 1074 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:03,924 INFO L93 Difference]: Finished difference Result 1470 states and 1568 transitions. [2023-11-12 00:09:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:09:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:03,934 INFO L225 Difference]: With dead ends: 1470 [2023-11-12 00:09:03,934 INFO L226 Difference]: Without dead ends: 1470 [2023-11-12 00:09:03,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:03,935 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 681 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:03,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1623 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 00:09:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-12 00:09:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1031. [2023-11-12 00:09:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 573 states have (on average 1.9406631762652704) internal successors, (1112), 1024 states have internal predecessors, (1112), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1130 transitions. [2023-11-12 00:09:03,966 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1130 transitions. Word has length 8 [2023-11-12 00:09:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:03,967 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1130 transitions. [2023-11-12 00:09:03,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1130 transitions. [2023-11-12 00:09:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:09:03,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:03,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:03,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:04,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:04,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:04,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash -748709626, now seen corresponding path program 1 times [2023-11-12 00:09:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086281884] [2023-11-12 00:09:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:04,181 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 [2023-11-12 00:09:04,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:04,182 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:04,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:04,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:09:04,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:04,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:04,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:09:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086281884] [2023-11-12 00:09:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086281884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:04,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:04,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:09:04,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124737639] [2023-11-12 00:09:04,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:04,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:09:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:04,435 INFO L87 Difference]: Start difference. First operand 1031 states and 1130 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:05,335 INFO L93 Difference]: Finished difference Result 1485 states and 1618 transitions. [2023-11-12 00:09:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:09:05,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:09:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:05,349 INFO L225 Difference]: With dead ends: 1485 [2023-11-12 00:09:05,350 INFO L226 Difference]: Without dead ends: 1485 [2023-11-12 00:09:05,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:05,351 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 551 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:05,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 3048 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:09:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-11-12 00:09:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1276. [2023-11-12 00:09:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 818 states have (on average 1.921760391198044) internal successors, (1572), 1269 states have internal predecessors, (1572), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1590 transitions. [2023-11-12 00:09:05,394 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1590 transitions. Word has length 11 [2023-11-12 00:09:05,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:05,394 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1590 transitions. [2023-11-12 00:09:05,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1590 transitions. [2023-11-12 00:09:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:09:05,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:05,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:05,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:05,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:05,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr531ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:05,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1735160665, now seen corresponding path program 1 times [2023-11-12 00:09:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491605520] [2023-11-12 00:09:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:05,610 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 [2023-11-12 00:09:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:05,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:05,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:05,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:09:05,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:05,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:09:05,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:09:05,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:09:05,844 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 30 treesize of output 39 [2023-11-12 00:09:05,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:09:05,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-12 00:09:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:05,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:05,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:09:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491605520] [2023-11-12 00:09:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491605520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:05,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:05,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:09:05,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563251052] [2023-11-12 00:09:05,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:05,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:05,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:09:05,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:05,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:05,935 INFO L87 Difference]: Start difference. First operand 1276 states and 1590 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-12 00:09:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:07,874 INFO L93 Difference]: Finished difference Result 1654 states and 2039 transitions. [2023-11-12 00:09:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:09:07,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-12 00:09:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:07,883 INFO L225 Difference]: With dead ends: 1654 [2023-11-12 00:09:07,883 INFO L226 Difference]: Without dead ends: 1654 [2023-11-12 00:09:07,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:07,885 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 377 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:07,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2909 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 00:09:07,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2023-11-12 00:09:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1275. [2023-11-12 00:09:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 817 states have (on average 1.9216646266829864) internal successors, (1570), 1268 states have internal predecessors, (1570), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1588 transitions. [2023-11-12 00:09:07,920 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1588 transitions. Word has length 12 [2023-11-12 00:09:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:07,920 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1588 transitions. [2023-11-12 00:09:07,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-12 00:09:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1588 transitions. [2023-11-12 00:09:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:09:07,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:07,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:07,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:08,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:08,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:08,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:08,139 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-12 00:09:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:08,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698708648] [2023-11-12 00:09:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:08,140 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 [2023-11-12 00:09:08,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:08,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:08,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:08,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:09:08,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:08,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:08,351 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:09:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698708648] [2023-11-12 00:09:08,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698708648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:08,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:08,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:08,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016607939] [2023-11-12 00:09:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:08,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:09:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:08,353 INFO L87 Difference]: Start difference. First operand 1275 states and 1588 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-12 00:09:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:08,387 INFO L93 Difference]: Finished difference Result 1215 states and 1502 transitions. [2023-11-12 00:09:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-12 00:09:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:08,394 INFO L225 Difference]: With dead ends: 1215 [2023-11-12 00:09:08,394 INFO L226 Difference]: Without dead ends: 1215 [2023-11-12 00:09:08,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:08,395 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 81 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:08,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1930 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:09:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-12 00:09:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2023-11-12 00:09:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 781 states have (on average 1.9001280409731114) internal successors, (1484), 1208 states have internal predecessors, (1484), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1502 transitions. [2023-11-12 00:09:08,448 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1502 transitions. Word has length 18 [2023-11-12 00:09:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:08,448 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1502 transitions. [2023-11-12 00:09:08,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-12 00:09:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1502 transitions. [2023-11-12 00:09:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:09:08,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:08,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:08,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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)] Ended with exit code 0 [2023-11-12 00:09:08,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:08,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:08,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-12 00:09:08,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:08,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380713976] [2023-11-12 00:09:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:08,668 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 [2023-11-12 00:09:08,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:08,669 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:08,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:08,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:09:08,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:08,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:08,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:09:08,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380713976] [2023-11-12 00:09:08,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380713976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:08,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:08,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:09:08,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314976604] [2023-11-12 00:09:08,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:08,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:08,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:09:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:08,910 INFO L87 Difference]: Start difference. First operand 1215 states and 1502 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-12 00:09:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:09,005 INFO L93 Difference]: Finished difference Result 1187 states and 1446 transitions. [2023-11-12 00:09:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:09:09,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-12 00:09:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:09,011 INFO L225 Difference]: With dead ends: 1187 [2023-11-12 00:09:09,012 INFO L226 Difference]: Without dead ends: 1187 [2023-11-12 00:09:09,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:09,012 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 62 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:09,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2834 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:09:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2023-11-12 00:09:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2023-11-12 00:09:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 765 states have (on average 1.8640522875816994) internal successors, (1426), 1178 states have internal predecessors, (1426), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1444 transitions. [2023-11-12 00:09:09,041 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1444 transitions. Word has length 20 [2023-11-12 00:09:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:09,041 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1444 transitions. [2023-11-12 00:09:09,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-12 00:09:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1444 transitions. [2023-11-12 00:09:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 00:09:09,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:09,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:09,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:09,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:09,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:09,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-12 00:09:09,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857237869] [2023-11-12 00:09:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:09,262 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 [2023-11-12 00:09:09,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:09,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:09,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-12 00:09:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:09,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:09:09,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:09,484 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 7 [2023-11-12 00:09:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:09,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:09,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:09:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857237869] [2023-11-12 00:09:09,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857237869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:09,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:09,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:09,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908466382] [2023-11-12 00:09:09,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:09,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:09,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:09:09,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:09,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:09,586 INFO L87 Difference]: Start difference. First operand 1185 states and 1444 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-12 00:09:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:12,634 INFO L93 Difference]: Finished difference Result 1638 states and 2019 transitions. [2023-11-12 00:09:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:09:12,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-11-12 00:09:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:12,645 INFO L225 Difference]: With dead ends: 1638 [2023-11-12 00:09:12,645 INFO L226 Difference]: Without dead ends: 1638 [2023-11-12 00:09:12,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:12,646 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 921 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:12,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1232 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 00:09:12,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-11-12 00:09:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1181. [2023-11-12 00:09:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 765 states have (on average 1.8535947712418301) internal successors, (1418), 1174 states have internal predecessors, (1418), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1436 transitions. [2023-11-12 00:09:12,680 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1436 transitions. Word has length 34 [2023-11-12 00:09:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:12,681 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1436 transitions. [2023-11-12 00:09:12,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-12 00:09:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1436 transitions. [2023-11-12 00:09:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 00:09:12,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:12,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:12,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:12,902 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:12,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-12 00:09:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:12,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361382915] [2023-11-12 00:09:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:12,904 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 [2023-11-12 00:09:12,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:12,905 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:12,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:13,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:09:13,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:13,172 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 [2023-11-12 00:09:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:13,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:13,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:09:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361382915] [2023-11-12 00:09:13,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361382915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:13,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021816141] [2023-11-12 00:09:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:13,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:13,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:09:13,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:13,446 INFO L87 Difference]: Start difference. First operand 1181 states and 1436 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-12 00:09:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:18,165 INFO L93 Difference]: Finished difference Result 1773 states and 2179 transitions. [2023-11-12 00:09:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:09:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-11-12 00:09:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:18,175 INFO L225 Difference]: With dead ends: 1773 [2023-11-12 00:09:18,175 INFO L226 Difference]: Without dead ends: 1773 [2023-11-12 00:09:18,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:18,176 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 608 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:18,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 2425 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-12 00:09:18,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2023-11-12 00:09:18,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1177. [2023-11-12 00:09:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 765 states have (on average 1.8431372549019607) internal successors, (1410), 1170 states have internal predecessors, (1410), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1428 transitions. [2023-11-12 00:09:18,209 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1428 transitions. Word has length 34 [2023-11-12 00:09:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:18,210 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1428 transitions. [2023-11-12 00:09:18,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-12 00:09:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1428 transitions. [2023-11-12 00:09:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 00:09:18,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:18,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-12 00:09:18,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:18,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:18,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:18,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash -585509776, now seen corresponding path program 1 times [2023-11-12 00:09:18,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:18,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782983718] [2023-11-12 00:09:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:18,433 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 [2023-11-12 00:09:18,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:18,434 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:18,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:18,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:09:18,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:18,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:18,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:09:18,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782983718] [2023-11-12 00:09:18,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782983718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:18,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:09:18,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913517092] [2023-11-12 00:09:18,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:18,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:09:18,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:09:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:09:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:09:18,814 INFO L87 Difference]: Start difference. First operand 1177 states and 1428 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-12 00:09:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:18,886 INFO L93 Difference]: Finished difference Result 1165 states and 1408 transitions. [2023-11-12 00:09:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:09:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2023-11-12 00:09:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:18,893 INFO L225 Difference]: With dead ends: 1165 [2023-11-12 00:09:18,893 INFO L226 Difference]: Without dead ends: 1165 [2023-11-12 00:09:18,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:18,894 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 31 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:18,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2812 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:09:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2023-11-12 00:09:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2023-11-12 00:09:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 753 states have (on average 1.845949535192563) internal successors, (1390), 1158 states have internal predecessors, (1390), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:09:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1408 transitions. [2023-11-12 00:09:18,927 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1408 transitions. Word has length 53 [2023-11-12 00:09:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:18,928 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1408 transitions. [2023-11-12 00:09:18,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-12 00:09:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1408 transitions. [2023-11-12 00:09:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 00:09:18,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:18,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2023-11-12 00:09:18,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:09:19,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 00:09:19,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1514336476, now seen corresponding path program 1 times [2023-11-12 00:09:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:09:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140268129] [2023-11-12 00:09:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:19,153 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 [2023-11-12 00:09:19,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:09:19,154 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:09:19,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704dd298-99cd-4d3e-9c2f-540d827e3b0d/bin/utaipan-verify-NcY6lQBIFX/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 (14)] Waiting until timeout for monitored process [2023-11-12 00:09:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:19,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:09:19,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:19,655 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 5 [2023-11-12 00:09:19,664 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