./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh --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 b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:44:29,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:44:29,067 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 16:44:29,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:44:29,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:44:29,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:44:29,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:44:29,100 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:44:29,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:44:29,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:44:29,102 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:44:29,102 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:44:29,103 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:44:29,103 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:44:29,104 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:44:29,105 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:44:29,105 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:44:29,106 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:44:29,106 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:44:29,107 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:44:29,107 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:44:29,108 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:44:29,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:44:29,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:44:29,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:44:29,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:44:29,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:44:29,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:44:29,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:44:29,113 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:44:29,113 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:44:29,113 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 16:44:29,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:44:29,114 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:44:29,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:44:29,115 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:44:29,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:44:29,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:44:29,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:44:29,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:44:29,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:44:29,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:44:29,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:44:29,116 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:44:29,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:44:29,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:44:29,117 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:44:29,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:44:29,117 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_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2023-12-02 16:44:29,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:44:29,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:44:29,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:44:29,344 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:44:29,344 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:44:29,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2023-12-02 16:44:32,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:44:32,432 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:44:32,432 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2023-12-02 16:44:32,452 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data/8f5dd1823/f23042227c474fd39b397172fd597657/FLAG767678ad9 [2023-12-02 16:44:32,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data/8f5dd1823/f23042227c474fd39b397172fd597657 [2023-12-02 16:44:32,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:44:32,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:44:32,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:44:32,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:44:32,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:44:32,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:32" (1/1) ... [2023-12-02 16:44:32,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770b45ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:32, skipping insertion in model container [2023-12-02 16:44:32,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:32" (1/1) ... [2023-12-02 16:44:32,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:44:33,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:44:33,174 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) [2023-12-02 16:44:33,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@628cc4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:33, skipping insertion in model container [2023-12-02 16:44:33,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:44:33,175 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 16:44:33,177 INFO L158 Benchmark]: Toolchain (without parser) took 706.51ms. Allocated memory is still 167.8MB. Free memory was 124.5MB in the beginning and 94.7MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 16:44:33,178 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:44:33,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.93ms. Allocated memory is still 167.8MB. Free memory was 124.0MB in the beginning and 94.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 16:44:33,181 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.93ms. Allocated memory is still 167.8MB. Free memory was 124.0MB in the beginning and 94.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh --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 b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:44:34,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:44:35,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 16:44:35,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:44:35,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:44:35,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:44:35,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:44:35,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:44:35,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:44:35,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:44:35,090 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:44:35,091 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:44:35,092 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:44:35,092 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:44:35,093 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:44:35,093 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:44:35,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:44:35,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:44:35,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:44:35,096 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:44:35,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:44:35,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:44:35,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:44:35,097 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:44:35,098 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:44:35,098 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 16:44:35,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:44:35,099 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:44:35,099 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:44:35,100 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:44:35,100 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:44:35,100 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:44:35,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:44:35,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:44:35,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:44:35,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:44:35,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:44:35,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:44:35,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:44:35,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:44:35,103 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:44:35,103 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:44:35,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:44:35,104 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:44:35,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:44:35,104 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_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2023-12-02 16:44:35,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:44:35,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:44:35,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:44:35,452 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:44:35,452 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:44:35,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2023-12-02 16:44:38,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:44:38,560 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:44:38,561 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2023-12-02 16:44:38,581 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data/233fbea20/cff478ce06634a45ba318b4eb2bb5220/FLAGfb92db14c [2023-12-02 16:44:38,597 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/data/233fbea20/cff478ce06634a45ba318b4eb2bb5220 [2023-12-02 16:44:38,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:44:38,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:44:38,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:44:38,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:44:38,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:44:38,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:38" (1/1) ... [2023-12-02 16:44:38,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de62baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:38, skipping insertion in model container [2023-12-02 16:44:38,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:38" (1/1) ... [2023-12-02 16:44:38,680 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:44:39,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:44:39,417 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 16:44:39,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:44:39,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:44:39,562 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:44:39,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:44:39,728 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:44:39,736 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:44:39,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39 WrapperNode [2023-12-02 16:44:39,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:44:39,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:44:39,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:44:39,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:44:39,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,873 INFO L138 Inliner]: procedures = 180, calls = 525, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2203 [2023-12-02 16:44:39,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:44:39,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:44:39,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:44:39,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:44:39,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:39,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:40,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:44:40,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:44:40,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:44:40,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:44:40,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (1/1) ... [2023-12-02 16:44:40,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:44:40,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:44:40,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:44:40,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:44:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 16:44:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-12-02 16:44:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-12-02 16:44:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:44:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:44:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:44:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:44:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:44:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:44:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:44:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:44:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:44:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 16:44:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:44:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:44:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:44:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:44:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:44:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:44:40,347 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:44:40,350 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:44:40,354 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 16:44:48,868 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:44:49,150 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:44:49,150 INFO L309 CfgBuilder]: Removed 151 assume(true) statements. [2023-12-02 16:44:49,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:44:49 BoogieIcfgContainer [2023-12-02 16:44:49,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:44:49,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:44:49,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:44:49,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:44:49,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:44:38" (1/3) ... [2023-12-02 16:44:49,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21340e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:44:49, skipping insertion in model container [2023-12-02 16:44:49,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:39" (2/3) ... [2023-12-02 16:44:49,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21340e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:44:49, skipping insertion in model container [2023-12-02 16:44:49,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:44:49" (3/3) ... [2023-12-02 16:44:49,161 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2023-12-02 16:44:49,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:44:49,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2023-12-02 16:44:49,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:44:49,263 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;@775c2c89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:44:49,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2023-12-02 16:44:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 1873 states, 871 states have (on average 2.4615384615384617) internal successors, (2144), 1859 states have internal predecessors, (2144), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 16:44:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:44:49,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:44:49,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:44:49,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:44:49,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:44:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash 109812, now seen corresponding path program 1 times [2023-12-02 16:44:49,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:44:49,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472803289] [2023-12-02 16:44:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:44:49,298 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 [2023-12-02 16:44:49,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:44:49,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:44:49,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:44:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:44:49,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:44:49,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:44:49,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:44:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:44:49,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:44:49,626 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:44:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472803289] [2023-12-02 16:44:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472803289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:44:49,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:44:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:44:49,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783563920] [2023-12-02 16:44:49,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:44:49,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:44:49,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:44:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:44:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:44:49,667 INFO L87 Difference]: Start difference. First operand has 1873 states, 871 states have (on average 2.4615384615384617) internal successors, (2144), 1859 states have internal predecessors, (2144), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:44:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:44:53,782 INFO L93 Difference]: Finished difference Result 2324 states and 2487 transitions. [2023-12-02 16:44:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:44:53,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 16:44:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:44:53,813 INFO L225 Difference]: With dead ends: 2324 [2023-12-02 16:44:53,813 INFO L226 Difference]: Without dead ends: 2323 [2023-12-02 16:44:53,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:44:53,818 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 1779 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:44:53,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 1374 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 16:44:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2023-12-02 16:44:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1986. [2023-12-02 16:44:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1008 states have (on average 2.257936507936508) internal successors, (2276), 1970 states have internal predecessors, (2276), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:44:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2308 transitions. [2023-12-02 16:44:53,924 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2308 transitions. Word has length 2 [2023-12-02 16:44:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:44:53,925 INFO L495 AbstractCegarLoop]: Abstraction has 1986 states and 2308 transitions. [2023-12-02 16:44:53,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:44:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2308 transitions. [2023-12-02 16:44:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:44:53,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:44:53,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:44:53,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:44:54,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:44:54,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:44:54,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:44:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash 109813, now seen corresponding path program 1 times [2023-12-02 16:44:54,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:44:54,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073119797] [2023-12-02 16:44:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:44:54,130 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 [2023-12-02 16:44:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:44:54,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:44:54,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:44:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:44:54,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:44:54,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:44:54,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:44:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:44:54,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:44:54,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:44:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073119797] [2023-12-02 16:44:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073119797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:44:54,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:44:54,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:44:54,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358654240] [2023-12-02 16:44:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:44:54,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:44:54,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:44:54,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:44:54,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:44:54,309 INFO L87 Difference]: Start difference. First operand 1986 states and 2308 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:45:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:00,228 INFO L93 Difference]: Finished difference Result 2689 states and 3092 transitions. [2023-12-02 16:45:00,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:45:00,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 16:45:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:00,239 INFO L225 Difference]: With dead ends: 2689 [2023-12-02 16:45:00,239 INFO L226 Difference]: Without dead ends: 2689 [2023-12-02 16:45:00,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:00,240 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 776 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:00,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 2512 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 16:45:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2023-12-02 16:45:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2367. [2023-12-02 16:45:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 1387 states have (on average 2.1997116077865897) internal successors, (3051), 2348 states have internal predecessors, (3051), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 16:45:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3089 transitions. [2023-12-02 16:45:00,304 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3089 transitions. Word has length 2 [2023-12-02 16:45:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:00,304 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 3089 transitions. [2023-12-02 16:45:00,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:45:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3089 transitions. [2023-12-02 16:45:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:45:00,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:00,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:45:00,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:00,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:00,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:00,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1665027394, now seen corresponding path program 1 times [2023-12-02 16:45:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068626427] [2023-12-02 16:45:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:00,509 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 [2023-12-02 16:45:00,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:00,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:00,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:00,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:45:00,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:00,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:45:00,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:45:00,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:45:00,787 INFO L378 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 [2023-12-02 16:45:00,807 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:45:00,807 INFO L378 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 [2023-12-02 16:45:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:00,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:00,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068626427] [2023-12-02 16:45:00,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068626427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:00,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:00,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:45:00,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030316682] [2023-12-02 16:45:00,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:00,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:00,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:00,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:00,830 INFO L87 Difference]: Start difference. First operand 2367 states and 3089 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-02 16:45:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:11,319 INFO L93 Difference]: Finished difference Result 4416 states and 5288 transitions. [2023-12-02 16:45:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:45:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-12-02 16:45:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:11,340 INFO L225 Difference]: With dead ends: 4416 [2023-12-02 16:45:11,340 INFO L226 Difference]: Without dead ends: 4416 [2023-12-02 16:45:11,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:11,342 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 2164 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 3880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:11,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 2074 Invalid, 3880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-02 16:45:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4416 states. [2023-12-02 16:45:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4416 to 2949. [2023-12-02 16:45:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 1969 states have (on average 2.254443880142204) internal successors, (4439), 2924 states have internal predecessors, (4439), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4489 transitions. [2023-12-02 16:45:11,432 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4489 transitions. Word has length 6 [2023-12-02 16:45:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:11,433 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4489 transitions. [2023-12-02 16:45:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-02 16:45:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4489 transitions. [2023-12-02 16:45:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 16:45:11,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:11,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:11,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:11,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:11,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:11,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -76241660, now seen corresponding path program 1 times [2023-12-02 16:45:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262501011] [2023-12-02 16:45:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:11,637 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 [2023-12-02 16:45:11,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:11,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:11,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:11,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:45:11,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:11,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:45:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:11,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:11,814 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262501011] [2023-12-02 16:45:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262501011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:11,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:11,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:45:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634817475] [2023-12-02 16:45:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:45:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:45:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:11,816 INFO L87 Difference]: Start difference. First operand 2949 states and 4489 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 16:45:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:15,522 INFO L93 Difference]: Finished difference Result 4019 states and 5872 transitions. [2023-12-02 16:45:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:45:15,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-12-02 16:45:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:15,543 INFO L225 Difference]: With dead ends: 4019 [2023-12-02 16:45:15,544 INFO L226 Difference]: Without dead ends: 4019 [2023-12-02 16:45:15,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:15,545 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 1812 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:15,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1822 Valid, 2203 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 16:45:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-12-02 16:45:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 2858. [2023-12-02 16:45:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 1969 states have (on average 2.1462671406805485) internal successors, (4226), 2833 states have internal predecessors, (4226), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4276 transitions. [2023-12-02 16:45:15,632 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4276 transitions. Word has length 7 [2023-12-02 16:45:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:15,632 INFO L495 AbstractCegarLoop]: Abstraction has 2858 states and 4276 transitions. [2023-12-02 16:45:15,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 16:45:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4276 transitions. [2023-12-02 16:45:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 16:45:15,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:15,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:15,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:15,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:15,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:15,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:15,835 INFO L85 PathProgramCache]: Analyzing trace with hash -76241659, now seen corresponding path program 1 times [2023-12-02 16:45:15,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:15,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114093816] [2023-12-02 16:45:15,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:15,835 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 [2023-12-02 16:45:15,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:15,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:15,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:15,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:45:15,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:16,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:45:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:16,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:16,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:16,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114093816] [2023-12-02 16:45:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114093816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:16,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:16,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:45:16,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21716558] [2023-12-02 16:45:16,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:16,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:45:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:45:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:16,029 INFO L87 Difference]: Start difference. First operand 2858 states and 4276 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 16:45:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:21,826 INFO L93 Difference]: Finished difference Result 4373 states and 6433 transitions. [2023-12-02 16:45:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:45:21,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-12-02 16:45:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:21,845 INFO L225 Difference]: With dead ends: 4373 [2023-12-02 16:45:21,845 INFO L226 Difference]: Without dead ends: 4373 [2023-12-02 16:45:21,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:21,846 INFO L413 NwaCegarLoop]: 1948 mSDtfsCounter, 1251 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:21,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 2769 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-02 16:45:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2023-12-02 16:45:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 3114. [2023-12-02 16:45:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 2235 states have (on average 2.135123042505593) internal successors, (4772), 3089 states have internal predecessors, (4772), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4822 transitions. [2023-12-02 16:45:21,924 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4822 transitions. Word has length 7 [2023-12-02 16:45:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:21,925 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 4822 transitions. [2023-12-02 16:45:21,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 16:45:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4822 transitions. [2023-12-02 16:45:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 16:45:21,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:21,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:21,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:22,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:22,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:22,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:22,130 INFO L85 PathProgramCache]: Analyzing trace with hash 366061891, now seen corresponding path program 1 times [2023-12-02 16:45:22,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:22,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954021914] [2023-12-02 16:45:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:22,130 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 [2023-12-02 16:45:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:22,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:22,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:22,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:45:22,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:22,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:22,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:22,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954021914] [2023-12-02 16:45:22,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954021914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:22,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:22,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:45:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342481351] [2023-12-02 16:45:22,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:45:22,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:45:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:22,278 INFO L87 Difference]: Start difference. First operand 3114 states and 4822 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:45:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:23,629 INFO L93 Difference]: Finished difference Result 3060 states and 4742 transitions. [2023-12-02 16:45:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:45:23,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 16:45:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:23,641 INFO L225 Difference]: With dead ends: 3060 [2023-12-02 16:45:23,642 INFO L226 Difference]: Without dead ends: 3060 [2023-12-02 16:45:23,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:23,642 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 70 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:23,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3195 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:45:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2023-12-02 16:45:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2023-12-02 16:45:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2205 states have (on average 2.127891156462585) internal successors, (4692), 3035 states have internal predecessors, (4692), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4742 transitions. [2023-12-02 16:45:23,711 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4742 transitions. Word has length 10 [2023-12-02 16:45:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:23,711 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4742 transitions. [2023-12-02 16:45:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:45:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4742 transitions. [2023-12-02 16:45:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 16:45:23,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:23,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:23,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:23,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:23,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:23,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash -401786979, now seen corresponding path program 1 times [2023-12-02 16:45:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:23,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802392154] [2023-12-02 16:45:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:23,915 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 [2023-12-02 16:45:23,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:23,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:23,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:24,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:45:24,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:24,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:24,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802392154] [2023-12-02 16:45:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802392154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:24,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:45:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582448271] [2023-12-02 16:45:24,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:24,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:24,112 INFO L87 Difference]: Start difference. First operand 3060 states and 4742 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) [2023-12-02 16:45:25,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:25,774 INFO L93 Difference]: Finished difference Result 3046 states and 4700 transitions. [2023-12-02 16:45:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:45:25,775 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 [2023-12-02 16:45:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:25,788 INFO L225 Difference]: With dead ends: 3046 [2023-12-02 16:45:25,788 INFO L226 Difference]: Without dead ends: 3046 [2023-12-02 16:45:25,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:25,789 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 58 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:25,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4749 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:45:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2023-12-02 16:45:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 3044. [2023-12-02 16:45:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 2203 states have (on average 2.109850204266909) internal successors, (4648), 3019 states have internal predecessors, (4648), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4698 transitions. [2023-12-02 16:45:25,866 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4698 transitions. Word has length 12 [2023-12-02 16:45:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:25,867 INFO L495 AbstractCegarLoop]: Abstraction has 3044 states and 4698 transitions. [2023-12-02 16:45:25,867 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) [2023-12-02 16:45:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4698 transitions. [2023-12-02 16:45:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 16:45:25,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:25,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:25,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:26,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:26,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:26,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -666655844, now seen corresponding path program 1 times [2023-12-02 16:45:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:26,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882121103] [2023-12-02 16:45:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:26,073 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 [2023-12-02 16:45:26,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:26,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:26,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:26,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:45:26,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:26,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:26,288 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:26,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882121103] [2023-12-02 16:45:26,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882121103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:26,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:26,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:45:26,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555085019] [2023-12-02 16:45:26,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:26,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:45:26,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:26,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:45:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:26,290 INFO L87 Difference]: Start difference. First operand 3044 states and 4698 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-12-02 16:45:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:27,594 INFO L93 Difference]: Finished difference Result 2930 states and 4458 transitions. [2023-12-02 16:45:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:45:27,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-12-02 16:45:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:27,606 INFO L225 Difference]: With dead ends: 2930 [2023-12-02 16:45:27,606 INFO L226 Difference]: Without dead ends: 2930 [2023-12-02 16:45:27,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:27,607 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 70 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:27,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3079 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:45:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-12-02 16:45:27,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2930. [2023-12-02 16:45:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2113 states have (on average 2.0861334595362044) internal successors, (4408), 2905 states have internal predecessors, (4408), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4458 transitions. [2023-12-02 16:45:27,656 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4458 transitions. Word has length 17 [2023-12-02 16:45:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 2930 states and 4458 transitions. [2023-12-02 16:45:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-12-02 16:45:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4458 transitions. [2023-12-02 16:45:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 16:45:27,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:27,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:27,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:27,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:27,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash -871126436, now seen corresponding path program 1 times [2023-12-02 16:45:27,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:27,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772069892] [2023-12-02 16:45:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:27,860 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 [2023-12-02 16:45:27,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:27,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:27,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:28,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:45:28,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:28,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:28,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772069892] [2023-12-02 16:45:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772069892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:28,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:28,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:45:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812740534] [2023-12-02 16:45:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:28,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:45:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:45:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:28,053 INFO L87 Difference]: Start difference. First operand 2930 states and 4458 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-12-02 16:45:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:29,256 INFO L93 Difference]: Finished difference Result 2876 states and 4378 transitions. [2023-12-02 16:45:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:45:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-12-02 16:45:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:29,263 INFO L225 Difference]: With dead ends: 2876 [2023-12-02 16:45:29,263 INFO L226 Difference]: Without dead ends: 2876 [2023-12-02 16:45:29,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:45:29,264 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 70 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:29,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3005 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:45:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2023-12-02 16:45:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2876. [2023-12-02 16:45:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2083 states have (on average 2.0777724435909746) internal successors, (4328), 2851 states have internal predecessors, (4328), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4378 transitions. [2023-12-02 16:45:29,323 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4378 transitions. Word has length 17 [2023-12-02 16:45:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:29,324 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 4378 transitions. [2023-12-02 16:45:29,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-12-02 16:45:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4378 transitions. [2023-12-02 16:45:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 16:45:29,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:29,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:29,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:29,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:29,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr358REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:29,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash -706113418, now seen corresponding path program 1 times [2023-12-02 16:45:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393425142] [2023-12-02 16:45:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:29,530 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 [2023-12-02 16:45:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:29,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:29,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:29,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:45:29,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:29,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:29,703 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393425142] [2023-12-02 16:45:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393425142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:29,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:29,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:45:29,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276709256] [2023-12-02 16:45:29,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:29,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:29,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:29,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:29,705 INFO L87 Difference]: Start difference. First operand 2876 states and 4378 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-12-02 16:45:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:31,184 INFO L93 Difference]: Finished difference Result 2862 states and 4252 transitions. [2023-12-02 16:45:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:45:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2023-12-02 16:45:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:31,191 INFO L225 Difference]: With dead ends: 2862 [2023-12-02 16:45:31,191 INFO L226 Difference]: Without dead ends: 2862 [2023-12-02 16:45:31,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:31,192 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 58 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:31,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4464 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:45:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-02 16:45:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2856. [2023-12-02 16:45:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2077 states have (on average 2.0202214732787676) internal successors, (4196), 2831 states have internal predecessors, (4196), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4246 transitions. [2023-12-02 16:45:31,223 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4246 transitions. Word has length 19 [2023-12-02 16:45:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:31,223 INFO L495 AbstractCegarLoop]: Abstraction has 2856 states and 4246 transitions. [2023-12-02 16:45:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-12-02 16:45:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4246 transitions. [2023-12-02 16:45:31,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 16:45:31,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:31,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:31,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:31,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:31,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:31,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash 366115190, now seen corresponding path program 1 times [2023-12-02 16:45:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:31,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012044946] [2023-12-02 16:45:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:31,425 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 [2023-12-02 16:45:31,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:31,426 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:31,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:31,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:45:31,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:31,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:31,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012044946] [2023-12-02 16:45:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012044946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:31,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:31,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:45:31,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961183354] [2023-12-02 16:45:31,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:31,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:31,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:31,608 INFO L87 Difference]: Start difference. First operand 2856 states and 4246 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-12-02 16:45:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:33,163 INFO L93 Difference]: Finished difference Result 2842 states and 4204 transitions. [2023-12-02 16:45:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:45:33,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2023-12-02 16:45:33,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:33,169 INFO L225 Difference]: With dead ends: 2842 [2023-12-02 16:45:33,169 INFO L226 Difference]: Without dead ends: 2842 [2023-12-02 16:45:33,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:33,169 INFO L413 NwaCegarLoop]: 1475 mSDtfsCounter, 58 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:33,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4401 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:45:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2023-12-02 16:45:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2840. [2023-12-02 16:45:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2075 states have (on average 2.000963855421687) internal successors, (4152), 2815 states have internal predecessors, (4152), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4202 transitions. [2023-12-02 16:45:33,196 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4202 transitions. Word has length 19 [2023-12-02 16:45:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:33,196 INFO L495 AbstractCegarLoop]: Abstraction has 2840 states and 4202 transitions. [2023-12-02 16:45:33,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-12-02 16:45:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4202 transitions. [2023-12-02 16:45:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 16:45:33,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:33,197 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] [2023-12-02 16:45:33,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:33,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:33,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 82770443, now seen corresponding path program 1 times [2023-12-02 16:45:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455948227] [2023-12-02 16:45:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:33,399 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 [2023-12-02 16:45:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:33,400 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:33,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:33,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:45:33,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:33,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:45:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:33,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:33,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455948227] [2023-12-02 16:45:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455948227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:33,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:45:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107288200] [2023-12-02 16:45:33,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:33,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:33,595 INFO L87 Difference]: Start difference. First operand 2840 states and 4202 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-02 16:45:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:37,163 INFO L93 Difference]: Finished difference Result 3098 states and 4357 transitions. [2023-12-02 16:45:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:45:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-12-02 16:45:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:37,170 INFO L225 Difference]: With dead ends: 3098 [2023-12-02 16:45:37,170 INFO L226 Difference]: Without dead ends: 3098 [2023-12-02 16:45:37,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:37,171 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1499 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:37,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2063 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-02 16:45:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2023-12-02 16:45:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2836. [2023-12-02 16:45:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2075 states have (on average 1.9971084337349398) internal successors, (4144), 2811 states have internal predecessors, (4144), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4194 transitions. [2023-12-02 16:45:37,214 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4194 transitions. Word has length 26 [2023-12-02 16:45:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:37,214 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 4194 transitions. [2023-12-02 16:45:37,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-02 16:45:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4194 transitions. [2023-12-02 16:45:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 16:45:37,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:37,215 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] [2023-12-02 16:45:37,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:37,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:37,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 82770444, now seen corresponding path program 1 times [2023-12-02 16:45:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878917091] [2023-12-02 16:45:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:37,417 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 [2023-12-02 16:45:37,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:37,418 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:37,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 16:45:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:37,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:45:37,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:37,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:45:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:37,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:37,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878917091] [2023-12-02 16:45:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878917091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:37,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:37,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:45:37,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122924256] [2023-12-02 16:45:37,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:37,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:37,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:37,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:37,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:37,729 INFO L87 Difference]: Start difference. First operand 2836 states and 4194 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-02 16:45:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:43,327 INFO L93 Difference]: Finished difference Result 3478 states and 4909 transitions. [2023-12-02 16:45:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:45:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-12-02 16:45:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:43,333 INFO L225 Difference]: With dead ends: 3478 [2023-12-02 16:45:43,333 INFO L226 Difference]: Without dead ends: 3478 [2023-12-02 16:45:43,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:43,334 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 711 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:43,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2885 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 16:45:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2023-12-02 16:45:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2869. [2023-12-02 16:45:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2108 states have (on average 1.9838709677419355) internal successors, (4182), 2844 states have internal predecessors, (4182), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4232 transitions. [2023-12-02 16:45:43,365 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4232 transitions. Word has length 26 [2023-12-02 16:45:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:43,365 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 4232 transitions. [2023-12-02 16:45:43,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-02 16:45:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4232 transitions. [2023-12-02 16:45:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:45:43,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:43,366 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] [2023-12-02 16:45:43,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:45:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:43,567 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:43,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1513515108, now seen corresponding path program 1 times [2023-12-02 16:45:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266732427] [2023-12-02 16:45:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:43,568 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 [2023-12-02 16:45:43,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:43,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:43,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 16:45:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:43,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:45:43,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:43,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:45:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:43,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:43,823 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:43,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266732427] [2023-12-02 16:45:43,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266732427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:43,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:43,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:45:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713117561] [2023-12-02 16:45:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:43,825 INFO L87 Difference]: Start difference. First operand 2869 states and 4232 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:45:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:48,042 INFO L93 Difference]: Finished difference Result 3927 states and 5690 transitions. [2023-12-02 16:45:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:45:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-12-02 16:45:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:48,048 INFO L225 Difference]: With dead ends: 3927 [2023-12-02 16:45:48,048 INFO L226 Difference]: Without dead ends: 3927 [2023-12-02 16:45:48,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:48,049 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 1621 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:48,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 3215 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 16:45:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2023-12-02 16:45:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 2866. [2023-12-02 16:45:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2108 states have (on average 1.9734345351043643) internal successors, (4160), 2841 states have internal predecessors, (4160), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4210 transitions. [2023-12-02 16:45:48,102 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4210 transitions. Word has length 33 [2023-12-02 16:45:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:48,102 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4210 transitions. [2023-12-02 16:45:48,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:45:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4210 transitions. [2023-12-02 16:45:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:45:48,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:48,103 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] [2023-12-02 16:45:48,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 16:45:48,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:48,303 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:48,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1513515109, now seen corresponding path program 1 times [2023-12-02 16:45:48,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:48,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035642686] [2023-12-02 16:45:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:48,304 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 [2023-12-02 16:45:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:48,305 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:48,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 16:45:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:48,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:45:48,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:48,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:45:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:48,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:48,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:48,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035642686] [2023-12-02 16:45:48,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035642686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:48,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:48,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:45:48,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921931772] [2023-12-02 16:45:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:48,642 INFO L87 Difference]: Start difference. First operand 2866 states and 4210 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:45:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:55,080 INFO L93 Difference]: Finished difference Result 4005 states and 5681 transitions. [2023-12-02 16:45:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:45:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-12-02 16:45:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:55,085 INFO L225 Difference]: With dead ends: 4005 [2023-12-02 16:45:55,085 INFO L226 Difference]: Without dead ends: 4005 [2023-12-02 16:45:55,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:55,086 INFO L413 NwaCegarLoop]: 1788 mSDtfsCounter, 1044 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3769 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-02 16:45:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2023-12-02 16:45:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 2866. [2023-12-02 16:45:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2108 states have (on average 1.9696394686907022) internal successors, (4152), 2841 states have internal predecessors, (4152), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:45:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4202 transitions. [2023-12-02 16:45:55,120 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4202 transitions. Word has length 33 [2023-12-02 16:45:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:55,120 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4202 transitions. [2023-12-02 16:45:55,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:45:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4202 transitions. [2023-12-02 16:45:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:45:55,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:55,121 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] [2023-12-02 16:45:55,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 16:45:55,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:55,322 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:45:55,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1988509404, now seen corresponding path program 1 times [2023-12-02 16:45:55,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:55,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908040730] [2023-12-02 16:45:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:55,323 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 [2023-12-02 16:45:55,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:55,324 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:45:55,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 16:45:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:55,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:45:55,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:55,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:45:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:45:55,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:55,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:55,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908040730] [2023-12-02 16:45:55,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908040730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:55,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:55,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:45:55,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161202259] [2023-12-02 16:45:55,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:55,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:45:55,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:45:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:45:55,595 INFO L87 Difference]: Start difference. First operand 2866 states and 4202 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:46:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:00,377 INFO L93 Difference]: Finished difference Result 3907 states and 5658 transitions. [2023-12-02 16:46:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:00,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-12-02 16:46:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:00,381 INFO L225 Difference]: With dead ends: 3907 [2023-12-02 16:46:00,381 INFO L226 Difference]: Without dead ends: 3907 [2023-12-02 16:46:00,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:00,382 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1599 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:00,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 3177 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 16:46:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2023-12-02 16:46:00,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 2862. [2023-12-02 16:46:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2108 states have (on average 1.9658444022770398) internal successors, (4144), 2837 states have internal predecessors, (4144), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:46:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4194 transitions. [2023-12-02 16:46:00,417 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4194 transitions. Word has length 33 [2023-12-02 16:46:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:00,417 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 4194 transitions. [2023-12-02 16:46:00,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:46:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4194 transitions. [2023-12-02 16:46:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:46:00,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:00,418 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] [2023-12-02 16:46:00,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 16:46:00,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:00,619 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:00,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1988509403, now seen corresponding path program 1 times [2023-12-02 16:46:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:00,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968185201] [2023-12-02 16:46:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:00,620 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 [2023-12-02 16:46:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:00,621 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:00,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-02 16:46:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:00,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:46:00,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:00,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:46:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:01,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:01,002 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968185201] [2023-12-02 16:46:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968185201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:01,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:01,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:46:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987868145] [2023-12-02 16:46:01,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:01,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:46:01,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:01,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:46:01,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:01,003 INFO L87 Difference]: Start difference. First operand 2862 states and 4194 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:46:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:07,994 INFO L93 Difference]: Finished difference Result 3997 states and 5665 transitions. [2023-12-02 16:46:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-12-02 16:46:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:07,997 INFO L225 Difference]: With dead ends: 3997 [2023-12-02 16:46:07,998 INFO L226 Difference]: Without dead ends: 3997 [2023-12-02 16:46:07,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:07,998 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 1036 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 3732 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-02 16:46:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2023-12-02 16:46:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 2858. [2023-12-02 16:46:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2108 states have (on average 1.9620493358633777) internal successors, (4136), 2833 states have internal predecessors, (4136), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:46:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4186 transitions. [2023-12-02 16:46:08,031 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4186 transitions. Word has length 33 [2023-12-02 16:46:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:08,032 INFO L495 AbstractCegarLoop]: Abstraction has 2858 states and 4186 transitions. [2023-12-02 16:46:08,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-12-02 16:46:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4186 transitions. [2023-12-02 16:46:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 16:46:08,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:08,032 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] [2023-12-02 16:46:08,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-02 16:46:08,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:08,233 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:08,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1028453637, now seen corresponding path program 1 times [2023-12-02 16:46:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074276001] [2023-12-02 16:46:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:08,234 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 [2023-12-02 16:46:08,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:08,235 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:08,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 16:46:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:08,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:46:08,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:08,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:08,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:08,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074276001] [2023-12-02 16:46:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074276001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:08,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913515003] [2023-12-02 16:46:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:08,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:46:08,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:46:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:08,516 INFO L87 Difference]: Start difference. First operand 2858 states and 4186 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-12-02 16:46:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:10,292 INFO L93 Difference]: Finished difference Result 2846 states and 4162 transitions. [2023-12-02 16:46:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2023-12-02 16:46:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:10,296 INFO L225 Difference]: With dead ends: 2846 [2023-12-02 16:46:10,297 INFO L226 Difference]: Without dead ends: 2846 [2023-12-02 16:46:10,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:10,297 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 31 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:10,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4358 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 16:46:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-12-02 16:46:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2846. [2023-12-02 16:46:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2096 states have (on average 1.9618320610687023) internal successors, (4112), 2821 states have internal predecessors, (4112), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:46:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4162 transitions. [2023-12-02 16:46:10,333 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4162 transitions. Word has length 40 [2023-12-02 16:46:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:10,333 INFO L495 AbstractCegarLoop]: Abstraction has 2846 states and 4162 transitions. [2023-12-02 16:46:10,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-12-02 16:46:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4162 transitions. [2023-12-02 16:46:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 16:46:10,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:10,334 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] [2023-12-02 16:46:10,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 16:46:10,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:10,534 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:10,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 810867074, now seen corresponding path program 1 times [2023-12-02 16:46:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741760417] [2023-12-02 16:46:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:10,535 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 [2023-12-02 16:46:10,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:10,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:10,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 16:46:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:10,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:46:10,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:10,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:10,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:10,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741760417] [2023-12-02 16:46:10,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741760417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:10,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:10,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:46:10,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285384362] [2023-12-02 16:46:10,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:10,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:46:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:46:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:46:10,923 INFO L87 Difference]: Start difference. First operand 2846 states and 4162 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2023-12-02 16:46:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:12,647 INFO L93 Difference]: Finished difference Result 4142 states and 5828 transitions. [2023-12-02 16:46:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:46:12,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2023-12-02 16:46:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:12,653 INFO L225 Difference]: With dead ends: 4142 [2023-12-02 16:46:12,653 INFO L226 Difference]: Without dead ends: 4142 [2023-12-02 16:46:12,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:46:12,654 INFO L413 NwaCegarLoop]: 1478 mSDtfsCounter, 1073 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:12,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2842 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 16:46:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2023-12-02 16:46:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3510. [2023-12-02 16:46:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2756 states have (on average 1.9448476052249637) internal successors, (5360), 3478 states have internal predecessors, (5360), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 16:46:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5424 transitions. [2023-12-02 16:46:12,698 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5424 transitions. Word has length 44 [2023-12-02 16:46:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:12,698 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5424 transitions. [2023-12-02 16:46:12,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2023-12-02 16:46:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5424 transitions. [2023-12-02 16:46:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 16:46:12,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:12,705 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] [2023-12-02 16:46:12,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 16:46:12,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:12,906 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:12,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1264994850, now seen corresponding path program 1 times [2023-12-02 16:46:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975391696] [2023-12-02 16:46:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:12,907 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 [2023-12-02 16:46:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:12,908 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:12,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-02 16:46:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:13,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:46:13,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:13,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:13,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:13,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975391696] [2023-12-02 16:46:13,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975391696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:13,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:13,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504257735] [2023-12-02 16:46:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:13,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:46:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:13,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:46:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:13,170 INFO L87 Difference]: Start difference. First operand 3510 states and 5424 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-12-02 16:46:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:14,786 INFO L93 Difference]: Finished difference Result 3468 states and 5354 transitions. [2023-12-02 16:46:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:14,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2023-12-02 16:46:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:14,790 INFO L225 Difference]: With dead ends: 3468 [2023-12-02 16:46:14,790 INFO L226 Difference]: Without dead ends: 3468 [2023-12-02 16:46:14,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:14,791 INFO L413 NwaCegarLoop]: 1458 mSDtfsCounter, 33 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:14,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4344 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:46:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-12-02 16:46:14,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3468. [2023-12-02 16:46:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 2714 states have (on average 1.9491525423728813) internal successors, (5290), 3436 states have internal predecessors, (5290), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 16:46:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 5354 transitions. [2023-12-02 16:46:14,825 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 5354 transitions. Word has length 49 [2023-12-02 16:46:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:14,825 INFO L495 AbstractCegarLoop]: Abstraction has 3468 states and 5354 transitions. [2023-12-02 16:46:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-12-02 16:46:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 5354 transitions. [2023-12-02 16:46:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 16:46:14,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:14,826 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] [2023-12-02 16:46:14,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-02 16:46:15,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:15,027 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1147654709, now seen corresponding path program 1 times [2023-12-02 16:46:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:15,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384024960] [2023-12-02 16:46:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:15,028 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 [2023-12-02 16:46:15,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:15,029 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:15,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 16:46:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:15,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:46:15,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:15,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:15,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:15,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384024960] [2023-12-02 16:46:15,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384024960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:15,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:15,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147889130] [2023-12-02 16:46:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:46:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:46:15,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:15,385 INFO L87 Difference]: Start difference. First operand 3468 states and 5354 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-12-02 16:46:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:17,042 INFO L93 Difference]: Finished difference Result 3450 states and 5324 transitions. [2023-12-02 16:46:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:17,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2023-12-02 16:46:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:17,048 INFO L225 Difference]: With dead ends: 3450 [2023-12-02 16:46:17,048 INFO L226 Difference]: Without dead ends: 3450 [2023-12-02 16:46:17,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:17,049 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 23 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:17,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4342 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:46:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2023-12-02 16:46:17,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3450. [2023-12-02 16:46:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 2696 states have (on average 1.9510385756676558) internal successors, (5260), 3418 states have internal predecessors, (5260), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 16:46:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 5324 transitions. [2023-12-02 16:46:17,093 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 5324 transitions. Word has length 52 [2023-12-02 16:46:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:17,093 INFO L495 AbstractCegarLoop]: Abstraction has 3450 states and 5324 transitions. [2023-12-02 16:46:17,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-12-02 16:46:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 5324 transitions. [2023-12-02 16:46:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 16:46:17,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:17,094 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] [2023-12-02 16:46:17,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 16:46:17,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:17,294 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:17,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash -543350673, now seen corresponding path program 1 times [2023-12-02 16:46:17,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:17,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280707116] [2023-12-02 16:46:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:17,295 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 [2023-12-02 16:46:17,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:17,296 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:17,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 16:46:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:17,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:46:17,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:17,527 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:46:17,528 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:46:17,528 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:46:17,531 INFO L378 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 [2023-12-02 16:46:17,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:17,578 INFO L378 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 [2023-12-02 16:46:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:17,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:17,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280707116] [2023-12-02 16:46:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280707116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:17,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:17,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864268274] [2023-12-02 16:46:17,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:17,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:46:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:46:17,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:17,595 INFO L87 Difference]: Start difference. First operand 3450 states and 5324 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:46:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:20,113 INFO L93 Difference]: Finished difference Result 3422 states and 5295 transitions. [2023-12-02 16:46:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:20,114 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-02 16:46:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:20,118 INFO L225 Difference]: With dead ends: 3422 [2023-12-02 16:46:20,118 INFO L226 Difference]: Without dead ends: 3422 [2023-12-02 16:46:20,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:20,119 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 4 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:20,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4290 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 16:46:20,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2023-12-02 16:46:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3419. [2023-12-02 16:46:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 2665 states have (on average 1.9617260787992494) internal successors, (5228), 3387 states have internal predecessors, (5228), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 16:46:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5292 transitions. [2023-12-02 16:46:20,155 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5292 transitions. Word has length 55 [2023-12-02 16:46:20,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:20,155 INFO L495 AbstractCegarLoop]: Abstraction has 3419 states and 5292 transitions. [2023-12-02 16:46:20,156 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:46:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5292 transitions. [2023-12-02 16:46:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 16:46:20,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:20,156 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] [2023-12-02 16:46:20,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-02 16:46:20,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:20,357 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:20,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash 384073216, now seen corresponding path program 1 times [2023-12-02 16:46:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996214429] [2023-12-02 16:46:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:20,358 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 [2023-12-02 16:46:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:20,359 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:20,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 16:46:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:20,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:46:20,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:20,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:20,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996214429] [2023-12-02 16:46:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996214429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:46:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600368349] [2023-12-02 16:46:20,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:46:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:46:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:46:20,825 INFO L87 Difference]: Start difference. First operand 3419 states and 5292 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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) [2023-12-02 16:46:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:22,454 INFO L93 Difference]: Finished difference Result 4549 states and 6755 transitions. [2023-12-02 16:46:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:46:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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 [2023-12-02 16:46:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:22,461 INFO L225 Difference]: With dead ends: 4549 [2023-12-02 16:46:22,461 INFO L226 Difference]: Without dead ends: 4549 [2023-12-02 16:46:22,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:46:22,462 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 790 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:22,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 3043 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:46:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2023-12-02 16:46:22,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4204. [2023-12-02 16:46:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4204 states, 3444 states have (on average 1.9337979094076656) internal successors, (6660), 4163 states have internal predecessors, (6660), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 16:46:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6742 transitions. [2023-12-02 16:46:22,503 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6742 transitions. Word has length 53 [2023-12-02 16:46:22,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:22,503 INFO L495 AbstractCegarLoop]: Abstraction has 4204 states and 6742 transitions. [2023-12-02 16:46:22,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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) [2023-12-02 16:46:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6742 transitions. [2023-12-02 16:46:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 16:46:22,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:22,504 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] [2023-12-02 16:46:22,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-02 16:46:22,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:22,704 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:22,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash 25742039, now seen corresponding path program 1 times [2023-12-02 16:46:22,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:22,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180643038] [2023-12-02 16:46:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:22,705 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 [2023-12-02 16:46:22,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:22,706 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:22,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 16:46:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:23,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:46:23,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:23,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:46:23,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:46:23,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:46:23,469 INFO L378 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 [2023-12-02 16:46:23,482 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:46:23,483 INFO L378 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 [2023-12-02 16:46:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:23,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:23,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180643038] [2023-12-02 16:46:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180643038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:23,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:23,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:46:23,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576723801] [2023-12-02 16:46:23,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:23,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:46:23,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:23,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:46:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:23,495 INFO L87 Difference]: Start difference. First operand 4204 states and 6742 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-02 16:46:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:28,522 INFO L93 Difference]: Finished difference Result 5976 states and 9496 transitions. [2023-12-02 16:46:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2023-12-02 16:46:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:28,527 INFO L225 Difference]: With dead ends: 5976 [2023-12-02 16:46:28,528 INFO L226 Difference]: Without dead ends: 5976 [2023-12-02 16:46:28,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:28,528 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3660 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3674 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:28,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3674 Valid, 823 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-02 16:46:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5976 states. [2023-12-02 16:46:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5976 to 3999. [2023-12-02 16:46:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3323 states have (on average 1.8399037014745712) internal successors, (6114), 3958 states have internal predecessors, (6114), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 16:46:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 6196 transitions. [2023-12-02 16:46:28,584 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 6196 transitions. Word has length 56 [2023-12-02 16:46:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:28,584 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 6196 transitions. [2023-12-02 16:46:28,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-02 16:46:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 6196 transitions. [2023-12-02 16:46:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 16:46:28,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:28,585 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] [2023-12-02 16:46:28,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-02 16:46:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:28,785 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:28,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1423239350, now seen corresponding path program 1 times [2023-12-02 16:46:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381623848] [2023-12-02 16:46:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:28,786 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 [2023-12-02 16:46:28,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:28,787 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:28,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-02 16:46:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:29,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:46:29,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:29,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:46:29,062 INFO L378 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 19 treesize of output 1 [2023-12-02 16:46:29,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 16:46:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:29,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:29,093 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:29,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381623848] [2023-12-02 16:46:29,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381623848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:29,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:29,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:29,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199892244] [2023-12-02 16:46:29,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:29,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:46:29,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:46:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:29,094 INFO L87 Difference]: Start difference. First operand 3999 states and 6196 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:33,576 INFO L93 Difference]: Finished difference Result 3998 states and 6192 transitions. [2023-12-02 16:46:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:46:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-12-02 16:46:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:33,580 INFO L225 Difference]: With dead ends: 3998 [2023-12-02 16:46:33,580 INFO L226 Difference]: Without dead ends: 3998 [2023-12-02 16:46:33,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:46:33,581 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 3 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:33,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3789 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 16:46:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2023-12-02 16:46:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3998. [2023-12-02 16:46:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3323 states have (on average 1.8386999699067108) internal successors, (6110), 3957 states have internal predecessors, (6110), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 16:46:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6192 transitions. [2023-12-02 16:46:33,635 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6192 transitions. Word has length 60 [2023-12-02 16:46:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:33,635 INFO L495 AbstractCegarLoop]: Abstraction has 3998 states and 6192 transitions. [2023-12-02 16:46:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6192 transitions. [2023-12-02 16:46:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 16:46:33,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:33,636 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] [2023-12-02 16:46:33,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-02 16:46:33,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:33,837 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:33,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1423239349, now seen corresponding path program 1 times [2023-12-02 16:46:33,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:33,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250257177] [2023-12-02 16:46:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:33,838 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 [2023-12-02 16:46:33,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:33,839 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:33,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-02 16:46:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:34,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:46:34,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:34,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:46:34,141 INFO L378 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 13 treesize of output 9 [2023-12-02 16:46:34,153 INFO L378 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 19 treesize of output 1 [2023-12-02 16:46:34,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-02 16:46:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:34,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:34,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:34,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250257177] [2023-12-02 16:46:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250257177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:34,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023876676] [2023-12-02 16:46:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:34,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:46:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:46:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:34,201 INFO L87 Difference]: Start difference. First operand 3998 states and 6192 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:40,291 INFO L93 Difference]: Finished difference Result 3997 states and 6188 transitions. [2023-12-02 16:46:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:46:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-12-02 16:46:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:40,295 INFO L225 Difference]: With dead ends: 3997 [2023-12-02 16:46:40,295 INFO L226 Difference]: Without dead ends: 3997 [2023-12-02 16:46:40,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:46:40,296 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 1 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:40,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3762 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-02 16:46:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2023-12-02 16:46:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3997. [2023-12-02 16:46:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 3319 states have (on average 1.839710756251883) internal successors, (6106), 3956 states have internal predecessors, (6106), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 16:46:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6188 transitions. [2023-12-02 16:46:40,332 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6188 transitions. Word has length 60 [2023-12-02 16:46:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:40,333 INFO L495 AbstractCegarLoop]: Abstraction has 3997 states and 6188 transitions. [2023-12-02 16:46:40,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6188 transitions. [2023-12-02 16:46:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 16:46:40,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:40,333 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] [2023-12-02 16:46:40,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-02 16:46:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:40,534 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:40,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1301050154, now seen corresponding path program 1 times [2023-12-02 16:46:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825805265] [2023-12-02 16:46:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:40,535 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 [2023-12-02 16:46:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:40,536 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:40,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-02 16:46:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:40,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:46:40,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:40,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:46:40,830 INFO L378 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 19 treesize of output 1 [2023-12-02 16:46:40,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 16:46:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:40,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:40,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825805265] [2023-12-02 16:46:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825805265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:40,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120790711] [2023-12-02 16:46:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:40,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:46:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:46:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:40,864 INFO L87 Difference]: Start difference. First operand 3997 states and 6188 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:45,400 INFO L93 Difference]: Finished difference Result 3996 states and 6185 transitions. [2023-12-02 16:46:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:46:45,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-12-02 16:46:45,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:45,404 INFO L225 Difference]: With dead ends: 3996 [2023-12-02 16:46:45,404 INFO L226 Difference]: Without dead ends: 3996 [2023-12-02 16:46:45,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:46:45,405 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 3 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:45,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3784 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-02 16:46:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2023-12-02 16:46:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3996. [2023-12-02 16:46:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3996 states, 3319 states have (on average 1.8388068695390178) internal successors, (6103), 3955 states have internal predecessors, (6103), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 16:46:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6185 transitions. [2023-12-02 16:46:45,453 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6185 transitions. Word has length 60 [2023-12-02 16:46:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:45,453 INFO L495 AbstractCegarLoop]: Abstraction has 3996 states and 6185 transitions. [2023-12-02 16:46:45,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6185 transitions. [2023-12-02 16:46:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 16:46:45,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:45,454 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] [2023-12-02 16:46:45,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-02 16:46:45,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:45,654 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:45,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:45,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1301050153, now seen corresponding path program 1 times [2023-12-02 16:46:45,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:45,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264245808] [2023-12-02 16:46:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:45,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:45,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:45,656 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:45,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-02 16:46:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:45,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:46:45,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:45,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:46:45,955 INFO L378 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 13 treesize of output 9 [2023-12-02 16:46:45,968 INFO L378 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 19 treesize of output 1 [2023-12-02 16:46:46,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-02 16:46:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:46,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:46,014 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264245808] [2023-12-02 16:46:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264245808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914366109] [2023-12-02 16:46:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:46,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:46:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:46:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:46,015 INFO L87 Difference]: Start difference. First operand 3996 states and 6185 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:51,958 INFO L93 Difference]: Finished difference Result 3995 states and 6182 transitions. [2023-12-02 16:46:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:46:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2023-12-02 16:46:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:51,963 INFO L225 Difference]: With dead ends: 3995 [2023-12-02 16:46:51,963 INFO L226 Difference]: Without dead ends: 3995 [2023-12-02 16:46:51,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:46:51,963 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 1 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:51,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3757 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-02 16:46:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2023-12-02 16:46:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3995. [2023-12-02 16:46:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3316 states have (on average 1.8395657418576599) internal successors, (6100), 3954 states have internal predecessors, (6100), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 16:46:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 6182 transitions. [2023-12-02 16:46:51,995 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 6182 transitions. Word has length 60 [2023-12-02 16:46:51,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:51,996 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 6182 transitions. [2023-12-02 16:46:51,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-02 16:46:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 6182 transitions. [2023-12-02 16:46:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 16:46:51,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:51,996 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, 1, 1, 1, 1, 1] [2023-12-02 16:46:52,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-02 16:46:52,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:52,197 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:52,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:52,197 INFO L85 PathProgramCache]: Analyzing trace with hash -210881968, now seen corresponding path program 1 times [2023-12-02 16:46:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:52,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562089134] [2023-12-02 16:46:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:52,198 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 [2023-12-02 16:46:52,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:52,199 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:52,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-02 16:46:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:52,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:46:52,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:52,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:52,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562089134] [2023-12-02 16:46:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562089134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:52,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:52,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:46:52,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292512652] [2023-12-02 16:46:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:52,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:46:52,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:52,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:46:52,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:46:52,512 INFO L87 Difference]: Start difference. First operand 3995 states and 6182 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:46:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:54,025 INFO L93 Difference]: Finished difference Result 3997 states and 6190 transitions. [2023-12-02 16:46:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:46:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-12-02 16:46:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:54,034 INFO L225 Difference]: With dead ends: 3997 [2023-12-02 16:46:54,034 INFO L226 Difference]: Without dead ends: 3997 [2023-12-02 16:46:54,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:46:54,034 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4131 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:54,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4131 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:46:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2023-12-02 16:46:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3997. [2023-12-02 16:46:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 3317 states have (on average 1.8396141091347604) internal successors, (6102), 3956 states have internal predecessors, (6102), 41 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (47), 38 states have call predecessors, (47), 41 states have call successors, (47) [2023-12-02 16:46:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6190 transitions. [2023-12-02 16:46:54,086 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6190 transitions. Word has length 66 [2023-12-02 16:46:54,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:54,086 INFO L495 AbstractCegarLoop]: Abstraction has 3997 states and 6190 transitions. [2023-12-02 16:46:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:46:54,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6190 transitions. [2023-12-02 16:46:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 16:46:54,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:54,087 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, 1, 1, 1, 1, 1, 1] [2023-12-02 16:46:54,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-02 16:46:54,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:54,288 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:54,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 629361287, now seen corresponding path program 1 times [2023-12-02 16:46:54,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16595155] [2023-12-02 16:46:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:54,289 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 [2023-12-02 16:46:54,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:54,290 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:54,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-02 16:46:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:54,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:46:54,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:54,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:46:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:54,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:54,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16595155] [2023-12-02 16:46:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16595155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:46:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1343108246] [2023-12-02 16:46:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:54,658 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:46:54,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:46:54,659 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:46:54,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-02 16:46:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:55,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:46:55,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:55,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:46:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:55,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1343108246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:46:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385083845] [2023-12-02 16:46:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:55,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:46:55,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:46:55,267 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:46:55,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 16:46:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:55,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:46:55,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:55,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:46:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:46:55,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385083845] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:46:55,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:46:55,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 16:46:55,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308824690] [2023-12-02 16:46:55,699 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:46:55,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:46:55,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:46:55,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:46:55,700 INFO L87 Difference]: Start difference. First operand 3997 states and 6190 transitions. Second operand has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:46:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:58,157 INFO L93 Difference]: Finished difference Result 4006 states and 6209 transitions. [2023-12-02 16:46:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:46:58,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-12-02 16:46:58,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:58,167 INFO L225 Difference]: With dead ends: 4006 [2023-12-02 16:46:58,167 INFO L226 Difference]: Without dead ends: 4006 [2023-12-02 16:46:58,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:46:58,168 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 6 mSDsluCounter, 5494 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6871 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:58,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6871 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 16:46:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2023-12-02 16:46:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 4005. [2023-12-02 16:46:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4005 states, 3324 states have (on average 1.8396510228640193) internal successors, (6115), 3963 states have internal predecessors, (6115), 41 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (47), 38 states have call predecessors, (47), 41 states have call successors, (47) [2023-12-02 16:46:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6203 transitions. [2023-12-02 16:46:58,227 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6203 transitions. Word has length 67 [2023-12-02 16:46:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:58,227 INFO L495 AbstractCegarLoop]: Abstraction has 4005 states and 6203 transitions. [2023-12-02 16:46:58,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:46:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6203 transitions. [2023-12-02 16:46:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 16:46:58,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:58,228 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 16:46:58,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 16:46:58,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2023-12-02 16:46:58,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-02 16:46:58,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:58,829 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:46:58,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:58,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1544423440, now seen corresponding path program 2 times [2023-12-02 16:46:58,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:58,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960796110] [2023-12-02 16:46:58,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:46:58,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:58,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:58,831 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:46:58,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-02 16:46:59,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 16:46:59,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:46:59,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:46:59,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:59,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:46:59,217 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:46:59,218 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:46:59,218 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:46:59,220 INFO L378 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 [2023-12-02 16:46:59,315 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:46:59,315 INFO L378 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 [2023-12-02 16:46:59,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2023-12-02 16:46:59,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2023-12-02 16:46:59,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:59,549 INFO L378 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 [2023-12-02 16:46:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:46:59,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:59,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:59,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960796110] [2023-12-02 16:46:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960796110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:46:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629564313] [2023-12-02 16:46:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:59,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:46:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:46:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:46:59,570 INFO L87 Difference]: Start difference. First operand 4005 states and 6203 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:47:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:47:05,035 INFO L93 Difference]: Finished difference Result 3879 states and 5810 transitions. [2023-12-02 16:47:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:47:05,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-12-02 16:47:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:47:05,042 INFO L225 Difference]: With dead ends: 3879 [2023-12-02 16:47:05,042 INFO L226 Difference]: Without dead ends: 3879 [2023-12-02 16:47:05,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:47:05,043 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 1575 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:47:05,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 2740 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-02 16:47:05,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2023-12-02 16:47:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3660. [2023-12-02 16:47:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2980 states have (on average 1.8724832214765101) internal successors, (5580), 3621 states have internal predecessors, (5580), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:47:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5661 transitions. [2023-12-02 16:47:05,080 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5661 transitions. Word has length 70 [2023-12-02 16:47:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:47:05,080 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 5661 transitions. [2023-12-02 16:47:05,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:47:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5661 transitions. [2023-12-02 16:47:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 16:47:05,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:47:05,081 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 16:47:05,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-02 16:47:05,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:47:05,282 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:47:05,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:47:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash 118151196, now seen corresponding path program 1 times [2023-12-02 16:47:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:47:05,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997854470] [2023-12-02 16:47:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:05,282 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 [2023-12-02 16:47:05,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:47:05,283 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:47:05,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-02 16:47:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:47:05,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:47:05,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:05,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:47:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:05,773 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:47:05,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997854470] [2023-12-02 16:47:05,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997854470] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:47:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [642179673] [2023-12-02 16:47:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:05,774 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:47:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:47:05,775 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:47:05,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-12-02 16:47:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:47:06,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:47:06,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:06,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:47:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:06,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [642179673] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:47:06,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650452497] [2023-12-02 16:47:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:06,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:47:06,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:47:06,430 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:47:06,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 16:47:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:47:06,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:47:06,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:06,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:47:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:07,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650452497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:47:07,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:47:07,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 16:47:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888047943] [2023-12-02 16:47:07,003 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:47:07,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 16:47:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:47:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 16:47:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:47:07,004 INFO L87 Difference]: Start difference. First operand 3660 states and 5661 transitions. Second operand has 20 states, 17 states have (on average 4.764705882352941) internal successors, (81), 20 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 16:47:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:47:11,459 INFO L93 Difference]: Finished difference Result 3675 states and 5694 transitions. [2023-12-02 16:47:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 16:47:11,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.764705882352941) internal successors, (81), 20 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2023-12-02 16:47:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:47:11,466 INFO L225 Difference]: With dead ends: 3675 [2023-12-02 16:47:11,466 INFO L226 Difference]: Without dead ends: 3672 [2023-12-02 16:47:11,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 16:47:11,467 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 13 mSDsluCounter, 10976 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12351 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:47:11,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12351 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-02 16:47:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2023-12-02 16:47:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3669. [2023-12-02 16:47:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 2989 states have (on average 1.8705252592840416) internal successors, (5591), 3630 states have internal predecessors, (5591), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:47:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5672 transitions. [2023-12-02 16:47:11,500 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5672 transitions. Word has length 70 [2023-12-02 16:47:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:47:11,500 INFO L495 AbstractCegarLoop]: Abstraction has 3669 states and 5672 transitions. [2023-12-02 16:47:11,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.764705882352941) internal successors, (81), 20 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 16:47:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5672 transitions. [2023-12-02 16:47:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 16:47:11,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:47:11,501 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1] [2023-12-02 16:47:11,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2023-12-02 16:47:11,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 16:47:11,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-02 16:47:12,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:47:12,102 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:47:12,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:47:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1620782524, now seen corresponding path program 2 times [2023-12-02 16:47:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:47:12,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097533783] [2023-12-02 16:47:12,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:47:12,103 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 [2023-12-02 16:47:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:47:12,104 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:47:12,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-02 16:47:12,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:47:12,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:47:12,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:47:12,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:12,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:47:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:13,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:47:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097533783] [2023-12-02 16:47:13,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097533783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:47:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [845313647] [2023-12-02 16:47:13,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:47:13,391 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:47:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:47:13,392 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:47:13,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-02 16:47:14,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:47:14,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:47:15,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:47:15,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:15,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:47:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:47:15,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [845313647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:47:15,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81044847] [2023-12-02 16:47:15,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:47:15,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:47:15,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:47:15,249 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:47:15,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 16:47:42,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:47:42,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:47:42,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 16:47:42,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:42,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:47:42,514 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:47:42,514 INFO L378 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 [2023-12-02 16:47:42,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:47:42,935 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:47:42,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:47:43,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:47:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 16:47:43,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:47:43,236 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 16:47:43,237 INFO L378 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 25 treesize of output 24 [2023-12-02 16:47:43,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81044847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:47:43,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 16:47:43,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 10] total 35 [2023-12-02 16:47:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442770160] [2023-12-02 16:47:43,366 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 16:47:43,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 16:47:43,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:47:43,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 16:47:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1100, Unknown=11, NotChecked=0, Total=1332 [2023-12-02 16:47:43,368 INFO L87 Difference]: Start difference. First operand 3669 states and 5672 transitions. Second operand has 35 states, 32 states have (on average 4.65625) internal successors, (149), 34 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 16:48:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:48:13,844 INFO L93 Difference]: Finished difference Result 5511 states and 8763 transitions. [2023-12-02 16:48:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 16:48:13,844 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 4.65625) internal successors, (149), 34 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 76 [2023-12-02 16:48:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:48:13,853 INFO L225 Difference]: With dead ends: 5511 [2023-12-02 16:48:13,853 INFO L226 Difference]: Without dead ends: 5508 [2023-12-02 16:48:13,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1137, Invalid=5169, Unknown=14, NotChecked=0, Total=6320 [2023-12-02 16:48:13,855 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1482 mSDsluCounter, 15823 mSDsCounter, 0 mSdLazyCounter, 18104 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 16603 SdHoareTripleChecker+Invalid, 18196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 18104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:48:13,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 16603 Invalid, 18196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 18104 Invalid, 0 Unknown, 0 Unchecked, 27.6s Time] [2023-12-02 16:48:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2023-12-02 16:48:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3686. [2023-12-02 16:48:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3007 states have (on average 1.865979381443299) internal successors, (5611), 3647 states have internal predecessors, (5611), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:48:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5692 transitions. [2023-12-02 16:48:13,898 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5692 transitions. Word has length 76 [2023-12-02 16:48:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:48:13,898 INFO L495 AbstractCegarLoop]: Abstraction has 3686 states and 5692 transitions. [2023-12-02 16:48:13,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 4.65625) internal successors, (149), 34 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 16:48:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5692 transitions. [2023-12-02 16:48:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 16:48:13,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:48:13,899 INFO L195 NwaCegarLoop]: trace histogram [22, 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, 1, 1, 1, 1, 1] [2023-12-02 16:48:13,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 16:48:14,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-12-02 16:48:14,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-12-02 16:48:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:48:14,500 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:48:14,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:48:14,500 INFO L85 PathProgramCache]: Analyzing trace with hash -463884035, now seen corresponding path program 1 times [2023-12-02 16:48:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:48:14,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032735831] [2023-12-02 16:48:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:48:14,501 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 [2023-12-02 16:48:14,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:48:14,502 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:48:14,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-02 16:48:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:48:14,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:48:14,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:48:15,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:48:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:48:16,718 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:48:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032735831] [2023-12-02 16:48:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032735831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:48:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1852138839] [2023-12-02 16:48:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:48:16,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:48:16,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:48:16,719 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:48:16,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2023-12-02 16:48:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:48:17,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:48:17,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:48:17,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:48:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:48:17,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1852138839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:48:17,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885003003] [2023-12-02 16:48:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:48:17,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:48:17,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:48:17,820 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:48:17,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 16:48:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:48:18,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 16:48:18,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:48:18,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:48:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:48:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885003003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:48:21,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:48:21,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 74 [2023-12-02 16:48:21,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925459098] [2023-12-02 16:48:21,287 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:48:21,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-02 16:48:21,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:48:21,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-02 16:48:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1613, Invalid=3789, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 16:48:21,292 INFO L87 Difference]: Start difference. First operand 3686 states and 5692 transitions. Second operand has 74 states, 71 states have (on average 1.9014084507042253) internal successors, (135), 74 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 16:48:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:48:45,155 INFO L93 Difference]: Finished difference Result 3744 states and 5859 transitions. [2023-12-02 16:48:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-02 16:48:45,156 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 71 states have (on average 1.9014084507042253) internal successors, (135), 74 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2023-12-02 16:48:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:48:45,163 INFO L225 Difference]: With dead ends: 3744 [2023-12-02 16:48:45,163 INFO L226 Difference]: Without dead ends: 3741 [2023-12-02 16:48:45,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=6091, Invalid=13369, Unknown=0, NotChecked=0, Total=19460 [2023-12-02 16:48:45,168 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 50 mSDsluCounter, 39766 mSDsCounter, 0 mSdLazyCounter, 8441 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 41140 SdHoareTripleChecker+Invalid, 8606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 8441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:48:45,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 41140 Invalid, 8606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [165 Valid, 8441 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2023-12-02 16:48:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2023-12-02 16:48:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 3722. [2023-12-02 16:48:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 3043 states have (on average 1.8596779493920472) internal successors, (5659), 3683 states have internal predecessors, (5659), 38 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:48:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5740 transitions. [2023-12-02 16:48:45,221 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5740 transitions. Word has length 88 [2023-12-02 16:48:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:48:45,222 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 5740 transitions. [2023-12-02 16:48:45,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 71 states have (on average 1.9014084507042253) internal successors, (135), 74 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 16:48:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5740 transitions. [2023-12-02 16:48:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 16:48:45,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:48:45,223 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1] [2023-12-02 16:48:45,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-02 16:48:45,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-02 16:48:45,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2023-12-02 16:48:45,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:48:45,824 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:48:45,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:48:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1399786909, now seen corresponding path program 2 times [2023-12-02 16:48:45,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:48:45,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799994934] [2023-12-02 16:48:45,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:48:45,825 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 [2023-12-02 16:48:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:48:45,826 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:48:45,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-02 16:48:46,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:48:46,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:48:46,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-02 16:48:46,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:46,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:48:46,935 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:48:46,935 INFO L378 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 [2023-12-02 16:48:46,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:48:46,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:48:46,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:48:47,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 16:48:47,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:48:47,764 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:48:47,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:48:47,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:48:47,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:48:47,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:48:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:48:47,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:48:49,204 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4237 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4238) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4237) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4238 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4238) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-12-02 16:48:49,210 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:48:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799994934] [2023-12-02 16:48:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799994934] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:48:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549491988] [2023-12-02 16:48:49,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:48:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:48:49,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:48:49,211 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:48:49,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2023-12-02 16:48:51,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:48:51,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:48:51,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-02 16:48:51,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:51,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:48:51,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:48:51,834 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:48:51,834 INFO L378 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 [2023-12-02 16:48:51,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:48:51,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:48:51,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 16:48:51,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:48:52,519 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:48:52,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:48:52,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:48:52,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:48:52,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:48:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:48:52,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:48:53,828 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4791 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4792 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4792) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4791) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4792 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4792) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-12-02 16:48:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [549491988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:48:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316597505] [2023-12-02 16:48:53,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:48:53,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:48:53,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:48:53,834 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:48:53,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-02 16:49:21,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:49:21,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:49:21,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-02 16:49:21,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:49:21,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:49:21,671 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:49:21,672 INFO L378 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 [2023-12-02 16:49:21,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:49:21,727 INFO L378 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 13 treesize of output 9 [2023-12-02 16:49:21,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 16:49:21,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:49:22,420 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:49:22,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:49:22,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:49:22,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 16:49:22,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:49:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:49:22,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:49:23,866 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5345 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5345) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_5344 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5345 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5345) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5344) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 16:49:23,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316597505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:49:23,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:49:23,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-12-02 16:49:23,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947442795] [2023-12-02 16:49:23,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:49:23,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:49:23,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:49:23,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:49:23,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=173, Unknown=3, NotChecked=84, Total=306 [2023-12-02 16:49:23,875 INFO L87 Difference]: Start difference. First operand 3722 states and 5740 transitions. Second operand has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:49:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:42,321 INFO L93 Difference]: Finished difference Result 7593 states and 11897 transitions. [2023-12-02 16:49:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:49:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2023-12-02 16:49:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:42,334 INFO L225 Difference]: With dead ends: 7593 [2023-12-02 16:49:42,334 INFO L226 Difference]: Without dead ends: 7591 [2023-12-02 16:49:42,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 318 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=272, Unknown=3, NotChecked=108, Total=462 [2023-12-02 16:49:42,335 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 3780 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 9324 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3796 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 9361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:42,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3796 Valid, 5121 Invalid, 9361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 9324 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 16:49:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7591 states. [2023-12-02 16:49:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7591 to 3770. [2023-12-02 16:49:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 3091 states have (on average 1.8460045292785505) internal successors, (5706), 3730 states have internal predecessors, (5706), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:49:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5787 transitions. [2023-12-02 16:49:42,380 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5787 transitions. Word has length 110 [2023-12-02 16:49:42,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:42,380 INFO L495 AbstractCegarLoop]: Abstraction has 3770 states and 5787 transitions. [2023-12-02 16:49:42,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:49:42,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5787 transitions. [2023-12-02 16:49:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 16:49:42,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:42,381 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:42,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-12-02 16:49:42,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-02 16:49:42,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2023-12-02 16:49:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:49:42,982 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:49:42,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash 873525263, now seen corresponding path program 1 times [2023-12-02 16:49:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:49:42,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67903681] [2023-12-02 16:49:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:42,983 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 [2023-12-02 16:49:42,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:49:42,984 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:49:42,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-02 16:49:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:43,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 16:49:43,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:49:43,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:49:43,926 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 16:49:43,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 16:49:43,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:49:44,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 16:49:44,932 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:49:44,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:49:45,044 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:49:45,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:49:45,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:49:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:49:45,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:49:45,152 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5769 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5769) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 16:49:45,519 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5769 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5815))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5769)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:49:45,521 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:49:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67903681] [2023-12-02 16:49:45,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67903681] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:49:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [624415829] [2023-12-02 16:49:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:49:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:49:45,522 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:49:45,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2023-12-02 16:49:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:47,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 16:49:47,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:49:47,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:49:48,084 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 16:49:48,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 16:49:48,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:49:48,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-02 16:49:48,969 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:49:48,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 16:49:49,096 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:49:49,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 16:49:49,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 16:49:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:49:49,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:49:51,186 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6240 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6240) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 16:49:51,555 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6286 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6286))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6240)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 16:49:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [624415829] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:49:51,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498681599] [2023-12-02 16:49:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:51,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:49:51,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:49:51,559 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:49:51,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-02 16:49:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:52,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-02 16:49:52,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:49:52,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:49:52,316 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:49:52,316 INFO L378 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 [2023-12-02 16:49:52,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:49:52,702 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:49:52,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 16:49:52,775 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:49:52,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:49:54,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:49:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:49:54,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:49:54,862 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 16:49:54,863 INFO L378 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 25 treesize of output 24 [2023-12-02 16:49:54,869 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6709 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6709) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem41#1.base|)) is different from false [2023-12-02 16:49:54,878 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6709 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_6709) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 16:49:55,234 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6755 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6709 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6755)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6709) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2023-12-02 16:49:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498681599] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:49:55,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:49:55,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2023-12-02 16:49:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172179983] [2023-12-02 16:49:55,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:49:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 16:49:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:49:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 16:49:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=535, Unknown=13, NotChecked=378, Total=1056 [2023-12-02 16:49:55,239 INFO L87 Difference]: Start difference. First operand 3770 states and 5787 transitions. Second operand has 23 states, 19 states have (on average 7.473684210526316) internal successors, (142), 23 states have internal predecessors, (142), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:50:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:12,303 INFO L93 Difference]: Finished difference Result 7591 states and 11896 transitions. [2023-12-02 16:50:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:50:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 7.473684210526316) internal successors, (142), 23 states have internal predecessors, (142), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 112 [2023-12-02 16:50:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:12,311 INFO L225 Difference]: With dead ends: 7591 [2023-12-02 16:50:12,311 INFO L226 Difference]: Without dead ends: 7591 [2023-12-02 16:50:12,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 317 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=142, Invalid=575, Unknown=13, NotChecked=392, Total=1122 [2023-12-02 16:50:12,312 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 2458 mSDsluCounter, 8310 mSDsCounter, 0 mSdLazyCounter, 8961 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2481 SdHoareTripleChecker+Valid, 9099 SdHoareTripleChecker+Invalid, 8993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 8961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:12,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2481 Valid, 9099 Invalid, 8993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 8961 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2023-12-02 16:50:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7591 states. [2023-12-02 16:50:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7591 to 3769. [2023-12-02 16:50:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3769 states, 3091 states have (on average 1.8450339695891298) internal successors, (5703), 3729 states have internal predecessors, (5703), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:50:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 5784 transitions. [2023-12-02 16:50:12,370 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 5784 transitions. Word has length 112 [2023-12-02 16:50:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:12,371 INFO L495 AbstractCegarLoop]: Abstraction has 3769 states and 5784 transitions. [2023-12-02 16:50:12,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 7.473684210526316) internal successors, (142), 23 states have internal predecessors, (142), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:50:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 5784 transitions. [2023-12-02 16:50:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 16:50:12,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:12,372 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:12,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-12-02 16:50:12,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-02 16:50:12,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2023-12-02 16:50:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:50:12,973 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:50:12,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 873525264, now seen corresponding path program 1 times [2023-12-02 16:50:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:50:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234205991] [2023-12-02 16:50:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:12,974 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 [2023-12-02 16:50:12,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:50:12,975 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:50:12,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-12-02 16:50:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:13,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-02 16:50:13,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:50:13,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:50:13,971 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:50:13,971 INFO L378 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 [2023-12-02 16:50:13,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:50:13,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:50:14,001 INFO L378 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 13 treesize of output 9 [2023-12-02 16:50:14,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 16:50:14,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:50:14,756 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:50:14,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:50:14,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:50:14,868 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:50:14,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:50:14,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:50:14,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 16:50:14,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:50:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:50:14,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:50:15,069 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7224) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7225) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7224 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7224) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 16:50:15,100 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7224) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7225) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7224 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7224) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))))) is different from false [2023-12-02 16:50:16,338 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7224 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7317))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7316) .cse0 v_ArrVal_7224) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7225) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7224 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7316) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7317) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7224) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2023-12-02 16:50:16,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:50:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234205991] [2023-12-02 16:50:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234205991] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:50:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789671559] [2023-12-02 16:50:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:16,348 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:50:16,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:50:16,349 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:50:16,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2023-12-02 16:52:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:10,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-02 16:52:10,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:52:10,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:52:10,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:52:10,319 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:52:10,319 INFO L378 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 [2023-12-02 16:52:10,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:52:10,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:52:10,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 16:52:10,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:52:11,148 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:52:11,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:52:11,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:52:11,309 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:52:11,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:52:11,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:52:11,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:52:11,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:52:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:52:11,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:52:11,400 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7787 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7787) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 16:52:11,437 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7787 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7787) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-12-02 16:52:12,763 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7879) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7878) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7787 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7878))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7879) .cse2 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7787) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 16:52:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789671559] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:52:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265736330] [2023-12-02 16:52:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:12,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:52:12,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:52:12,774 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:52:12,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-02 16:52:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:13,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 16:52:13,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:52:13,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:52:13,580 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:52:13,580 INFO L378 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 [2023-12-02 16:52:13,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:52:13,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:52:13,611 INFO L378 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 13 treesize of output 9 [2023-12-02 16:52:13,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 16:52:13,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:52:14,298 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:52:14,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:52:14,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:52:14,379 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:52:14,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:52:14,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:52:14,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 16:52:14,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:52:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:52:14,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:52:14,464 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8348) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_8349 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8348) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8349) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 16:52:14,497 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8348) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_8349 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8348) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8349) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 16:52:15,799 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8349 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8441))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8440) .cse0 v_ArrVal_8348) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8349) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8348 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8440) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8441) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8348) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-12-02 16:52:15,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265736330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:52:15,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:52:15,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-02 16:52:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603833723] [2023-12-02 16:52:15,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:52:15,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:52:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:52:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:52:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=231, Unknown=9, NotChecked=342, Total=650 [2023-12-02 16:52:15,809 INFO L87 Difference]: Start difference. First operand 3769 states and 5784 transitions. Second operand has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:52:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:32,024 INFO L93 Difference]: Finished difference Result 7589 states and 11887 transitions. [2023-12-02 16:52:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:52:32,024 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 112 [2023-12-02 16:52:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:32,031 INFO L225 Difference]: With dead ends: 7589 [2023-12-02 16:52:32,032 INFO L226 Difference]: Without dead ends: 7589 [2023-12-02 16:52:32,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 322 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=111, Invalid=378, Unknown=9, NotChecked=432, Total=930 [2023-12-02 16:52:32,032 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 3779 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 7150 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3795 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 7150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:32,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3795 Valid, 4200 Invalid, 7187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 7150 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-12-02 16:52:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2023-12-02 16:52:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 3768. [2023-12-02 16:52:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 3091 states have (on average 1.8440634098997088) internal successors, (5700), 3728 states have internal predecessors, (5700), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:52:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5781 transitions. [2023-12-02 16:52:32,096 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5781 transitions. Word has length 112 [2023-12-02 16:52:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:32,096 INFO L495 AbstractCegarLoop]: Abstraction has 3768 states and 5781 transitions. [2023-12-02 16:52:32,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:52:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5781 transitions. [2023-12-02 16:52:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 16:52:32,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:32,097 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:52:32,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-12-02 16:52:32,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Ended with exit code 0 [2023-12-02 16:52:32,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2023-12-02 16:52:32,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:52:32,698 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:52:32,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1942219804, now seen corresponding path program 1 times [2023-12-02 16:52:32,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:52:32,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459299578] [2023-12-02 16:52:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:32,699 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 [2023-12-02 16:52:32,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:52:32,700 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:52:32,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-12-02 16:52:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:33,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 16:52:33,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:52:33,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:52:33,860 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 16:52:33,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 16:52:33,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:52:34,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 16:52:34,819 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:52:34,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:52:34,946 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:52:34,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:52:35,023 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:52:35,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:52:35,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:52:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:52:35,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:52:37,185 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8881 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-12-02 16:52:39,015 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8881 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8927 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8927))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8880)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8881)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-12-02 16:52:39,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:52:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459299578] [2023-12-02 16:52:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459299578] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:52:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [947766610] [2023-12-02 16:52:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:39,018 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:52:39,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:52:39,019 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:52:39,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2023-12-02 16:53:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:26,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 119 conjunts are in the unsatisfiable core [2023-12-02 16:53:26,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:53:26,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:53:26,618 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 16:53:26,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 16:53:26,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:53:26,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:53:26,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-02 16:53:26,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:53:28,157 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:53:28,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 16:53:28,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:53:28,373 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:53:28,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 16:53:28,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:53:28,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:53:28,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 66 [2023-12-02 16:53:28,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 16:53:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:53:28,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:53:28,658 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9415 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9415) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1)) (not (= (let ((.cse3 (bvadd |c_ULTIMATE.start_main_#t~mem42#1.offset| (_ bv7 32)))) (store (let ((.cse2 (bvadd (_ bv6 32) |c_ULTIMATE.start_main_#t~mem42#1.offset|))) (store (let ((.cse1 (bvadd |c_ULTIMATE.start_main_#t~mem42#1.offset| (_ bv5 32)))) (store (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~mem42#1.offset|))) (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base|) .cse0 (select v_ArrVal_9415 .cse0))) .cse1 (select v_ArrVal_9415 .cse1))) .cse2 (select v_ArrVal_9415 .cse2))) .cse3 (select v_ArrVal_9415 .cse3))) v_ArrVal_9415)))) is different from false [2023-12-02 16:53:28,722 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9415 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (or (not (= (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (let ((.cse5 (bvadd .cse2 (_ bv7 32)))) (store (let ((.cse4 (bvadd .cse2 (_ bv6 32)))) (store (let ((.cse3 (bvadd .cse2 (_ bv5 32)))) (store (let ((.cse1 (bvadd (_ bv4 32) .cse2))) (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 (select v_ArrVal_9415 .cse1))) .cse3 (select v_ArrVal_9415 .cse3))) .cse4 (select v_ArrVal_9415 .cse4))) .cse5 (select v_ArrVal_9415 .cse5)))) v_ArrVal_9415)) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6)) (_ bv1 1))))))) is different from false [2023-12-02 16:53:28,787 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9413 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9412 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9412)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (or (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store .cse0 .cse1 v_ArrVal_9415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (_ bv1 1))) (not (= (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9413) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse7 (bvadd .cse4 (_ bv7 32)))) (store (let ((.cse6 (bvadd (_ bv6 32) .cse4))) (store (let ((.cse5 (bvadd .cse4 (_ bv5 32)))) (store (let ((.cse3 (bvadd (_ bv4 32) .cse4))) (store (select .cse0 .cse1) .cse3 (select v_ArrVal_9415 .cse3))) .cse5 (select v_ArrVal_9415 .cse5))) .cse6 (select v_ArrVal_9415 .cse6))) .cse7 (select v_ArrVal_9415 .cse7)))) v_ArrVal_9415)))))) is different from false [2023-12-02 16:53:28,858 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9413 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9412 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse8))) (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse7 v_ArrVal_9412))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse8))) (or (not (= (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse7 v_ArrVal_9413) |c_ULTIMATE.start_main_~user~0#1.base|) .cse8))) (let ((.cse6 (bvadd .cse3 (_ bv7 32)))) (store (let ((.cse5 (bvadd (_ bv6 32) .cse3))) (store (let ((.cse4 (bvadd .cse3 (_ bv5 32)))) (store (let ((.cse2 (bvadd (_ bv4 32) .cse3))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_9415 .cse2))) .cse4 (select v_ArrVal_9415 .cse4))) .cse5 (select v_ArrVal_9415 .cse5))) .cse6 (select v_ArrVal_9415 .cse6)))) v_ArrVal_9415)) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store .cse0 .cse1 v_ArrVal_9415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse8)) (_ bv1 1))))))))) is different from false [2023-12-02 16:53:30,335 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9413 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9412 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9507)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse0 (store .cse9 .cse8 v_ArrVal_9412))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (or (= (bvadd (select |c_#valid| (select (select (store .cse0 .cse1 v_ArrVal_9415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (_ bv1 1)) (_ bv0 1)) (not (= (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9506) .cse8 v_ArrVal_9413) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse7 (bvadd .cse4 (_ bv7 32)))) (store (let ((.cse6 (bvadd (_ bv6 32) .cse4))) (store (let ((.cse5 (bvadd .cse4 (_ bv5 32)))) (store (let ((.cse3 (bvadd (_ bv4 32) .cse4))) (store (select .cse0 .cse1) .cse3 (select v_ArrVal_9415 .cse3))) .cse5 (select v_ArrVal_9415 .cse5))) .cse6 (select v_ArrVal_9415 .cse6))) .cse7 (select v_ArrVal_9415 .cse7)))) v_ArrVal_9415)))))))) is different from false [2023-12-02 16:53:30,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [947766610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:53:30,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233441755] [2023-12-02 16:53:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:30,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:53:30,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:53:30,351 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:53:30,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-02 16:53:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:31,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 16:53:31,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:53:31,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:53:31,219 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:53:31,219 INFO L378 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 [2023-12-02 16:53:31,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:53:32,010 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:53:32,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:53:33,224 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:53:33,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:53:33,334 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:53:33,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:53:33,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:53:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:53:33,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:53:33,367 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9946 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9946) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 16:53:35,512 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9945 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9945))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:53:35,525 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9945 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9945))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-12-02 16:53:35,948 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2023-12-02 16:53:35,948 INFO L378 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 61 treesize of output 60 [2023-12-02 16:53:35,960 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9992 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9945 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9992))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9945)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem39#1.base|)) is different from false [2023-12-02 16:53:35,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233441755] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:53:35,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:53:35,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 29 [2023-12-02 16:53:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388906648] [2023-12-02 16:53:35,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:53:35,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 16:53:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:53:35,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 16:53:35,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=995, Unknown=30, NotChecked=836, Total=2070 [2023-12-02 16:53:35,965 INFO L87 Difference]: Start difference. First operand 3768 states and 5781 transitions. Second operand has 30 states, 26 states have (on average 5.846153846153846) internal successors, (152), 29 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:53:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:53:57,077 INFO L93 Difference]: Finished difference Result 7589 states and 11890 transitions. [2023-12-02 16:53:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:53:57,078 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 5.846153846153846) internal successors, (152), 29 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 114 [2023-12-02 16:53:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:53:57,084 INFO L225 Difference]: With dead ends: 7589 [2023-12-02 16:53:57,084 INFO L226 Difference]: Without dead ends: 7589 [2023-12-02 16:53:57,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=254, Invalid=1242, Unknown=30, NotChecked=924, Total=2450 [2023-12-02 16:53:57,094 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 2451 mSDsluCounter, 8961 mSDsCounter, 0 mSdLazyCounter, 9818 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 9748 SdHoareTripleChecker+Invalid, 9855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:53:57,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 9748 Invalid, 9855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 9818 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2023-12-02 16:53:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2023-12-02 16:53:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 3767. [2023-12-02 16:53:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3091 states have (on average 1.843092850210288) internal successors, (5697), 3727 states have internal predecessors, (5697), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:53:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 5778 transitions. [2023-12-02 16:53:57,148 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 5778 transitions. Word has length 114 [2023-12-02 16:53:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:53:57,149 INFO L495 AbstractCegarLoop]: Abstraction has 3767 states and 5778 transitions. [2023-12-02 16:53:57,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 5.846153846153846) internal successors, (152), 29 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:53:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 5778 transitions. [2023-12-02 16:53:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 16:53:57,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:53:57,149 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:53:57,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-12-02 16:53:57,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2023-12-02 16:53:57,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (54)] Ended with exit code 0 [2023-12-02 16:53:57,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:53:57,750 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:53:57,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:53:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1942219805, now seen corresponding path program 1 times [2023-12-02 16:53:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:53:57,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265636303] [2023-12-02 16:53:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:53:57,751 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 [2023-12-02 16:53:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:53:57,752 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:53:57,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2023-12-02 16:53:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:53:58,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-02 16:53:58,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:53:58,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:53:58,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:53:58,995 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:53:58,995 INFO L378 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 [2023-12-02 16:53:59,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:53:59,032 INFO L378 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 13 treesize of output 9 [2023-12-02 16:53:59,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 16:53:59,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:53:59,769 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:53:59,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:53:59,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:53:59,900 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:53:59,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:53:59,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:53:59,999 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:53:59,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:54:00,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:54:00,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 16:54:00,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:54:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:54:00,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:54:00,206 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_10478) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 16:54:00,238 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10478) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-12-02 16:54:00,328 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10476 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10476))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10477) .cse0 v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_10478) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_10476 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10477) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10476) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 16:54:00,425 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10476 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10476))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10477) .cse1 v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10478) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_10476 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10477) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10476) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 16:54:03,307 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10571 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10570 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10476 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10571))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10570) .cse1 v_ArrVal_10477) (select (select (store .cse2 .cse1 v_ArrVal_10476) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10479))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10571 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10570 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10476 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10571))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_10476))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10570) .cse4 v_ArrVal_10477) .cse5 v_ArrVal_10479) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_10478) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 16:54:03,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:54:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265636303] [2023-12-02 16:54:03,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265636303] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:54:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [672883081] [2023-12-02 16:54:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:03,326 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:54:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:54:03,327 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:54:03,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2023-12-02 16:55:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:08,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 117 conjunts are in the unsatisfiable core [2023-12-02 16:55:08,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:08,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:55:08,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:55:08,792 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:55:08,792 INFO L378 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 [2023-12-02 16:55:08,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:55:08,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:55:09,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 16:55:09,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:55:10,217 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:55:10,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:55:10,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:55:10,499 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:55:10,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:55:10,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:55:10,683 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:55:10,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:55:10,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:55:10,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:55:10,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:55:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:55:10,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:10,814 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_11057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_11057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 16:55:10,853 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_11057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_11057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 16:55:10,978 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_11055 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11056 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11056) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11055) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_11055 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11056 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11055))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11056) .cse2 v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_11057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 16:55:11,095 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_11055 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11056 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_11055))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_11056) .cse1 v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_11057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_11055 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11056 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_11056) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_11055) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 16:55:12,696 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_11055 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11056 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11150 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11149))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11150) .cse1 v_ArrVal_11056) (select (select (store .cse2 .cse1 v_ArrVal_11055) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_11058))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_11055 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11056 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11058 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11150 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11149))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_11055))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11150) .cse4 v_ArrVal_11056) .cse5 v_ArrVal_11058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_11057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 16:55:12,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [672883081] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:55:12,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948229137] [2023-12-02 16:55:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:12,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:55:12,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:55:12,713 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:55:12,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-02 16:55:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:13,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-02 16:55:13,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:13,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:55:13,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:55:13,820 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:55:13,821 INFO L378 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 [2023-12-02 16:55:13,843 INFO L378 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 13 treesize of output 9 [2023-12-02 16:55:13,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:55:13,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 16:55:13,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:55:15,062 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:55:15,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:55:15,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:55:15,200 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:55:15,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:55:15,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:55:15,293 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:55:15,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:55:15,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:55:15,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 16:55:15,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:55:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:55:15,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:15,429 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_11637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 16:55:15,471 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_11637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 16:55:15,623 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_11635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11634 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11635) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_11635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11634))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_11635) .cse2 v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_11637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 16:55:15,809 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_11635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_11634))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_11635) .cse1 v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_11637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_11635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11634 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_11635) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_11634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 16:55:18,014 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_11729 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11728 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11729))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_11634))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11728) .cse0 v_ArrVal_11635) .cse1 v_ArrVal_11636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_11637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_11729 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11728 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11729))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_11728) .cse6 v_ArrVal_11635) (select (select (store .cse7 .cse6 v_ArrVal_11634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11636))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-12-02 16:55:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948229137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:55:18,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:55:18,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-02 16:55:18,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041955248] [2023-12-02 16:55:18,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:55:18,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 16:55:18,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:18,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 16:55:18,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=297, Unknown=15, NotChecked=720, Total=1122 [2023-12-02 16:55:18,040 INFO L87 Difference]: Start difference. First operand 3767 states and 5778 transitions. Second operand has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:56:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:56:00,443 INFO L93 Difference]: Finished difference Result 7587 states and 11881 transitions. [2023-12-02 16:56:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:56:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 114 [2023-12-02 16:56:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:56:00,451 INFO L225 Difference]: With dead ends: 7587 [2023-12-02 16:56:00,451 INFO L226 Difference]: Without dead ends: 7587 [2023-12-02 16:56:00,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 326 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=143, Invalid=502, Unknown=15, NotChecked=900, Total=1560 [2023-12-02 16:56:00,452 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 3769 mSDsluCounter, 5235 mSDsCounter, 0 mSdLazyCounter, 11470 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 6047 SdHoareTripleChecker+Invalid, 11506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 11470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:56:00,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 6047 Invalid, 11506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 11470 Invalid, 0 Unknown, 0 Unchecked, 41.6s Time] [2023-12-02 16:56:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7587 states. [2023-12-02 16:56:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7587 to 3766. [2023-12-02 16:56:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3091 states have (on average 1.842122290520867) internal successors, (5694), 3726 states have internal predecessors, (5694), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:56:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5775 transitions. [2023-12-02 16:56:00,495 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5775 transitions. Word has length 114 [2023-12-02 16:56:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:56:00,495 INFO L495 AbstractCegarLoop]: Abstraction has 3766 states and 5775 transitions. [2023-12-02 16:56:00,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:56:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5775 transitions. [2023-12-02 16:56:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:56:00,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:56:00,496 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:56:00,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-12-02 16:56:00,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (57)] Ended with exit code 0 [2023-12-02 16:56:00,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2023-12-02 16:56:01,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:56:01,097 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:56:01,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:56:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1834481916, now seen corresponding path program 1 times [2023-12-02 16:56:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:56:01,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796950155] [2023-12-02 16:56:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:01,098 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 [2023-12-02 16:56:01,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:56:01,099 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:56:01,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2023-12-02 16:56:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:56:02,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 16:56:02,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:56:02,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:56:02,636 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 16:56:02,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 16:56:02,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:56:02,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 16:56:04,347 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:56:04,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:56:04,555 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:56:04,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:56:04,716 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:56:04,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:56:04,883 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:56:04,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:56:04,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:56:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:56:04,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:56:05,112 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12185 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_12185) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 16:56:05,132 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12185 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_12185) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 16:56:05,156 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12185 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_12184))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12185)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:56:05,180 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12185 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12184))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12185)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:56:05,206 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12183 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_12183))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12184)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12185)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:56:05,235 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12183 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12183))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12184)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12185)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:56:05,795 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12231 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12183 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_12231))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12183)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12184)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12185)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-12-02 16:56:05,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:56:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796950155] [2023-12-02 16:56:05,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796950155] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:56:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802940467] [2023-12-02 16:56:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:56:05,802 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:56:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:56:05,803 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:56:05,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2023-12-02 16:57:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:24,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 16:57:24,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:57:24,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:57:25,661 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 16:57:25,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 16:57:25,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:57:26,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-02 16:57:27,502 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:57:27,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 16:57:27,803 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:57:27,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 16:57:28,007 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:57:28,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 16:57:28,196 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:57:28,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 16:57:28,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 16:57:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:57:28,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:57:28,282 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12688 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_12688) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2023-12-02 16:57:28,303 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12688 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_12688) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 16:57:28,326 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12688 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12687 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_12687))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12688)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:57:29,463 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12688 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12687 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_12686))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12687)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12688)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 16:57:30,230 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12688 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12687 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_12734))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12686)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12687)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12688)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 16:57:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [802940467] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:57:30,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381386010] [2023-12-02 16:57:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:57:30,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:57:30,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:57:30,238 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:57:30,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-02 16:57:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:57:31,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 16:57:31,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:57:31,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:57:31,409 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:57:31,410 INFO L378 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 [2023-12-02 16:57:31,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:57:32,313 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:57:32,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 16:57:32,478 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:57:32,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 16:57:32,645 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:57:32,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 16:57:32,820 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:57:32,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:57:32,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:57:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:57:32,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:57:32,995 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 16:57:32,995 INFO L378 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 25 treesize of output 24 [2023-12-02 16:57:33,212 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13189 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_13189) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 16:57:33,230 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13188 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13189 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_13188)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_13189) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2023-12-02 16:57:33,249 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13188 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13189 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_13188))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_13189) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 16:57:33,273 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13188 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13187 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13189 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_13187))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_13188)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_13189) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 16:57:33,296 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13188 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13187 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13189 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_13187))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_13188)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_13189) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 16:57:33,841 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13235 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13188 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13187 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13189 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_13235))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_13187)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_13188)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_13189) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 16:57:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381386010] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:57:33,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:57:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 28 [2023-12-02 16:57:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461946314] [2023-12-02 16:57:33,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:57:33,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 16:57:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:57:33,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 16:57:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=871, Unknown=44, NotChecked=1422, Total=2550 [2023-12-02 16:57:33,848 INFO L87 Difference]: Start difference. First operand 3766 states and 5775 transitions. Second operand has 29 states, 25 states have (on average 6.16) internal successors, (154), 29 states have internal predecessors, (154), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:58:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:58:22,525 INFO L93 Difference]: Finished difference Result 7587 states and 11884 transitions. [2023-12-02 16:58:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:58:22,526 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 6.16) internal successors, (154), 29 states have internal predecessors, (154), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 116 [2023-12-02 16:58:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:58:22,534 INFO L225 Difference]: With dead ends: 7587 [2023-12-02 16:58:22,534 INFO L226 Difference]: Without dead ends: 7587 [2023-12-02 16:58:22,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=226, Invalid=924, Unknown=44, NotChecked=1458, Total=2652 [2023-12-02 16:58:22,535 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 3767 mSDsluCounter, 13257 mSDsCounter, 0 mSdLazyCounter, 14083 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3790 SdHoareTripleChecker+Valid, 14044 SdHoareTripleChecker+Invalid, 14136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 14083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:58:22,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3790 Valid, 14044 Invalid, 14136 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [53 Valid, 14083 Invalid, 0 Unknown, 0 Unchecked, 48.1s Time] [2023-12-02 16:58:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7587 states. [2023-12-02 16:58:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7587 to 3765. [2023-12-02 16:58:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3091 states have (on average 1.8411517308314462) internal successors, (5691), 3725 states have internal predecessors, (5691), 38 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (43), 35 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-02 16:58:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 5772 transitions. [2023-12-02 16:58:22,594 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 5772 transitions. Word has length 116 [2023-12-02 16:58:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:58:22,594 INFO L495 AbstractCegarLoop]: Abstraction has 3765 states and 5772 transitions. [2023-12-02 16:58:22,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 6.16) internal successors, (154), 29 states have internal predecessors, (154), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:58:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 5772 transitions. [2023-12-02 16:58:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:58:22,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:58:22,595 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:58:22,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (60)] Ended with exit code 0 [2023-12-02 16:58:22,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-12-02 16:58:23,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2023-12-02 16:58:23,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:58:23,196 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-12-02 16:58:23,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:58:23,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1834481915, now seen corresponding path program 1 times [2023-12-02 16:58:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:58:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809965499] [2023-12-02 16:58:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:23,197 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 [2023-12-02 16:58:23,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:58:23,198 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 16:58:23,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2023-12-02 16:58:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:58:24,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 117 conjunts are in the unsatisfiable core [2023-12-02 16:58:24,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:58:24,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:58:24,933 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:58:24,933 INFO L378 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 [2023-12-02 16:58:24,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:58:24,986 INFO L378 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 13 treesize of output 9 [2023-12-02 16:58:25,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:58:25,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 16:58:25,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:58:26,395 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:58:26,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:58:26,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:58:26,617 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:58:26,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:58:26,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:58:26,792 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:58:26,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:58:26,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:58:26,964 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:58:26,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 16:58:26,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 16:58:27,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 16:58:27,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 16:58:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:58:27,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:58:27,330 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13738 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem43#1.base| v_ArrVal_13738) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 16:58:27,380 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13738 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_13738) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 16:58:27,436 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_13737) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_13736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13738 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_13736))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_13737) .cse2 v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_13738) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 16:58:27,494 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13738 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_13736))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_13737) .cse1 v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_13738) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_13737) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_13736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-12-02 16:58:27,565 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_13735))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_13734) .cse1 v_ArrVal_13737) (select (select (store .cse2 .cse1 v_ArrVal_13736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_13739))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13738 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_13735))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_13736))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_13734) .cse4 v_ArrVal_13737) .cse5 v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_13738) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 16:58:27,648 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_13735))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_13734) .cse2 v_ArrVal_13737) (select (select (store .cse3 .cse2 v_ArrVal_13736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_13739))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13738 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_13735))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_13736))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_13734) .cse5 v_ArrVal_13737) .cse6 v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_13738) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2023-12-02 16:58:29,340 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13830 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_13831))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_13735))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_13830) .cse1 v_ArrVal_13734) .cse2 v_ArrVal_13737) (select (select (store .cse3 .cse2 v_ArrVal_13736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_13739))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_13739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13738 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13736 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13830 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_13831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_13831))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_13735))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_13736))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_13830) .cse6 v_ArrVal_13734) .cse7 v_ArrVal_13737) .cse8 v_ArrVal_13739) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_13738) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2023-12-02 16:58:29,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:58:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809965499] [2023-12-02 16:58:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809965499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:58:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [485337392] [2023-12-02 16:58:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:58:29,366 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:58:29,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:58:29,367 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:58:29,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e5bc322-bed9-434b-bc7b-6670482e6456/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process