./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E --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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:08:16,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:08:17,089 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 04:08:17,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:08:17,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:08:17,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:08:17,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:08:17,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:08:17,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:08:17,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:08:17,126 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:08:17,127 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:08:17,127 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:08:17,127 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:08:17,127 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:08:17,127 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:08:17,128 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:08:17,128 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:08:17,128 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:08:17,128 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:08:17,128 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:08:17,129 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:08:17,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:08:17,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:08:17,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:08:17,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:08:17,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:08:17,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:08:17,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:08:17,131 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:08:17,131 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:08:17,131 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:08:17,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:08:17,131 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:08:17,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:08:17,132 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:08:17,132 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:08:17,132 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:08:17,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:08:17,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:08:17,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:08:17,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:08:17,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:08:17,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:08:17,133 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:08:17,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:08:17,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:08:17,133 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:08:17,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:08:17,134 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E 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 -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2024-11-14 04:08:17,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:08:17,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:08:17,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:08:17,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:08:17,528 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:08:17,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i Unable to find full path for "g++" [2024-11-14 04:08:19,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:08:20,295 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:08:20,296 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2024-11-14 04:08:20,317 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data/ba472902d/20f3deebf2b947fab8fa6b76047248bc/FLAG4ab8d2199 [2024-11-14 04:08:20,348 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data/ba472902d/20f3deebf2b947fab8fa6b76047248bc [2024-11-14 04:08:20,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:08:20,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:08:20,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:08:20,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:08:20,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:08:20,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:08:20" (1/1) ... [2024-11-14 04:08:20,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a7d96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:20, skipping insertion in model container [2024-11-14 04:08:20,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:08:20" (1/1) ... [2024-11-14 04:08:20,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:08:20,990 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,030 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,035 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,041 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,058 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,116 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,119 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,122 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,130 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,144 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,145 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,149 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,150 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,152 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,152 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,159 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,161 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,162 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,162 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,168 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:21,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:08:21,191 ERROR L321 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) [2024-11-14 04:08:21,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c437dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:21, skipping insertion in model container [2024-11-14 04:08:21,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:08:21,192 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 04:08:21,194 INFO L158 Benchmark]: Toolchain (without parser) took 841.06ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 95.0MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:08:21,195 INFO L158 Benchmark]: CDTParser took 1.28ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:08:21,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 838.02ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 95.0MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:08:21,201 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 838.02ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 95.0MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 769]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E --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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:08:24,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:08:24,405 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 04:08:24,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:08:24,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:08:24,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:08:24,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:08:24,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:08:24,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:08:24,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:08:24,476 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:08:24,476 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:08:24,477 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:08:24,477 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:08:24,477 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:08:24,477 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:08:24,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:08:24,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:08:24,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:08:24,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:08:24,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:08:24,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:08:24,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:08:24,478 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:08:24,478 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:08:24,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:08:24,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:08:24,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:08:24,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:08:24,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:08:24,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:08:24,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:08:24,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:08:24,481 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:08:24,481 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:08:24,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:08:24,481 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:08:24,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E 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 -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2024-11-14 04:08:24,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:08:24,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:08:24,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:08:24,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:08:24,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:08:24,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i Unable to find full path for "g++" [2024-11-14 04:08:27,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:08:27,611 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:08:27,612 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2024-11-14 04:08:27,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data/d3cf3bb48/bcdf416b5ae64fc3a038ef2e8d5c3ec5/FLAG995ba3a23 [2024-11-14 04:08:27,668 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/data/d3cf3bb48/bcdf416b5ae64fc3a038ef2e8d5c3ec5 [2024-11-14 04:08:27,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:08:27,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:08:27,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:08:27,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:08:27,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:08:27,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:08:27" (1/1) ... [2024-11-14 04:08:27,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e19b947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:27, skipping insertion in model container [2024-11-14 04:08:27,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:08:27" (1/1) ... [2024-11-14 04:08:27,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:08:28,441 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,508 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,516 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,522 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,531 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,620 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,623 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,628 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,647 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,672 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,673 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,677 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,678 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,687 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,689 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,690 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,691 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,696 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:08:28,729 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 04:08:28,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:08:28,810 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,837 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,842 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,850 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,860 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,894 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,897 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,899 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,905 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,915 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,916 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,919 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,920 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,921 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,922 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,932 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,933 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,934 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,935 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,939 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:08:28,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:08:28,949 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:08:29,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:08:29,190 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:08:29,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29 WrapperNode [2024-11-14 04:08:29,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:08:29,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:08:29,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:08:29,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:08:29,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,315 INFO L138 Inliner]: procedures = 179, calls = 435, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1455 [2024-11-14 04:08:29,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:08:29,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:08:29,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:08:29,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:08:29,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,440 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:08:29,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:08:29,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:08:29,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:08:29,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (1/1) ... [2024-11-14 04:08:29,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:08:29,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:08:29,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:08:29,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:08:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-14 04:08:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 04:08:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:08:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:08:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 04:08:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:08:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:08:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:08:29,953 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:08:29,956 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:08:29,960 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-14 04:08:37,781 INFO L? ?]: Removed 1745 outVars from TransFormulas that were not future-live. [2024-11-14 04:08:37,782 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:08:37,862 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:08:37,862 INFO L316 CfgBuilder]: Removed 77 assume(true) statements. [2024-11-14 04:08:37,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:08:37 BoogieIcfgContainer [2024-11-14 04:08:37,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:08:37,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:08:37,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:08:37,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:08:37,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:08:27" (1/3) ... [2024-11-14 04:08:37,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac8f0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:08:37, skipping insertion in model container [2024-11-14 04:08:37,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:08:29" (2/3) ... [2024-11-14 04:08:37,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac8f0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:08:37, skipping insertion in model container [2024-11-14 04:08:37,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:08:37" (3/3) ... [2024-11-14 04:08:37,874 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2024-11-14 04:08:37,892 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:08:37,893 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test4-3.i that has 3 procedures, 1630 locations, 1 initial locations, 44 loop locations, and 831 error locations. [2024-11-14 04:08:37,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:08:38,006 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@105d38c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:08:38,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 831 error locations. [2024-11-14 04:08:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 1630 states, 786 states have (on average 2.258269720101781) internal successors, (1775), 1621 states have internal predecessors, (1775), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:08:38,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:38,028 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:08:38,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:38,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2024-11-14 04:08:38,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:38,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895168357] [2024-11-14 04:08:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:38,050 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 [2024-11-14 04:08:38,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:38,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:38,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:38,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 04:08:38,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:38,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:38,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:38,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895168357] [2024-11-14 04:08:38,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895168357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:38,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:38,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:08:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423793504] [2024-11-14 04:08:38,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:38,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:08:38,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:38,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:08:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:08:38,369 INFO L87 Difference]: Start difference. First operand has 1630 states, 786 states have (on average 2.258269720101781) internal successors, (1775), 1621 states have internal predecessors, (1775), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-14 04:08:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:38,484 INFO L93 Difference]: Finished difference Result 1611 states and 1702 transitions. [2024-11-14 04:08:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:08:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2024-11-14 04:08:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:38,531 INFO L225 Difference]: With dead ends: 1611 [2024-11-14 04:08:38,532 INFO L226 Difference]: Without dead ends: 1609 [2024-11-14 04:08:38,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:08:38,537 INFO L432 NwaCegarLoop]: 1702 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:38,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:08:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-14 04:08:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2024-11-14 04:08:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 776 states have (on average 2.149484536082474) internal successors, (1668), 1600 states have internal predecessors, (1668), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 1700 transitions. [2024-11-14 04:08:38,719 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 1700 transitions. Word has length 5 [2024-11-14 04:08:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:38,720 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 1700 transitions. [2024-11-14 04:08:38,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-14 04:08:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 1700 transitions. [2024-11-14 04:08:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:08:38,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:38,721 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:08:38,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:38,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:38,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:38,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2024-11-14 04:08:38,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:38,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262825941] [2024-11-14 04:08:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:38,925 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 [2024-11-14 04:08:38,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:38,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:38,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:39,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:08:39,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:39,146 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 [2024-11-14 04:08:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:39,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:39,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:39,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262825941] [2024-11-14 04:08:39,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262825941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:39,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:39,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:08:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755581780] [2024-11-14 04:08:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:39,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:08:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:39,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:08:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:39,180 INFO L87 Difference]: Start difference. First operand 1609 states and 1700 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-14 04:08:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:42,734 INFO L93 Difference]: Finished difference Result 1517 states and 1609 transitions. [2024-11-14 04:08:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:08:42,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-14 04:08:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:42,741 INFO L225 Difference]: With dead ends: 1517 [2024-11-14 04:08:42,742 INFO L226 Difference]: Without dead ends: 1517 [2024-11-14 04:08:42,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:42,743 INFO L432 NwaCegarLoop]: 995 mSDtfsCounter, 1042 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:42,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1202 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 04:08:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-11-14 04:08:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1515. [2024-11-14 04:08:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 776 states have (on average 2.0283505154639174) internal successors, (1574), 1506 states have internal predecessors, (1574), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1606 transitions. [2024-11-14 04:08:42,823 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1606 transitions. Word has length 5 [2024-11-14 04:08:42,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:42,824 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1606 transitions. [2024-11-14 04:08:42,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-14 04:08:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1606 transitions. [2024-11-14 04:08:42,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:08:42,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:42,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:08:42,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:43,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:43,027 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:43,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2024-11-14 04:08:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:43,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581286139] [2024-11-14 04:08:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:43,029 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 [2024-11-14 04:08:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:43,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:43,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:43,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:08:43,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:43,213 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 [2024-11-14 04:08:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:43,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:43,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:43,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581286139] [2024-11-14 04:08:43,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581286139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:43,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:43,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:08:43,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105364732] [2024-11-14 04:08:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:43,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:08:43,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:08:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:43,249 INFO L87 Difference]: Start difference. First operand 1515 states and 1606 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-14 04:08:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:47,990 INFO L93 Difference]: Finished difference Result 1835 states and 1946 transitions. [2024-11-14 04:08:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:08:47,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-14 04:08:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:47,999 INFO L225 Difference]: With dead ends: 1835 [2024-11-14 04:08:47,999 INFO L226 Difference]: Without dead ends: 1835 [2024-11-14 04:08:47,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:48,000 INFO L432 NwaCegarLoop]: 1361 mSDtfsCounter, 522 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:48,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 2043 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-14 04:08:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2024-11-14 04:08:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1682. [2024-11-14 04:08:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 953 states have (on average 1.987408184679958) internal successors, (1894), 1673 states have internal predecessors, (1894), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1926 transitions. [2024-11-14 04:08:48,053 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1926 transitions. Word has length 5 [2024-11-14 04:08:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:48,054 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 1926 transitions. [2024-11-14 04:08:48,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-14 04:08:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1926 transitions. [2024-11-14 04:08:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 04:08:48,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:48,054 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 04:08:48,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:08:48,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:48,257 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:48,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1157550359, now seen corresponding path program 1 times [2024-11-14 04:08:48,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:48,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281836957] [2024-11-14 04:08:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:48,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:48,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:48,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:48,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:48,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:08:48,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:48,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:48,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281836957] [2024-11-14 04:08:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281836957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:48,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:08:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378898412] [2024-11-14 04:08:48,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:48,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:08:48,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:48,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:08:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:48,440 INFO L87 Difference]: Start difference. First operand 1682 states and 1926 transitions. Second operand has 3 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) [2024-11-14 04:08:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:48,587 INFO L93 Difference]: Finished difference Result 2934 states and 3383 transitions. [2024-11-14 04:08:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:08:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2024-11-14 04:08:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:48,604 INFO L225 Difference]: With dead ends: 2934 [2024-11-14 04:08:48,604 INFO L226 Difference]: Without dead ends: 2934 [2024-11-14 04:08:48,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:48,606 INFO L432 NwaCegarLoop]: 2079 mSDtfsCounter, 1114 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:48,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 3670 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:08:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2024-11-14 04:08:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1683. [2024-11-14 04:08:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 954 states have (on average 1.9863731656184487) internal successors, (1895), 1674 states have internal predecessors, (1895), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 1927 transitions. [2024-11-14 04:08:48,673 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 1927 transitions. Word has length 6 [2024-11-14 04:08:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:48,674 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 1927 transitions. [2024-11-14 04:08:48,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2024-11-14 04:08:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 1927 transitions. [2024-11-14 04:08:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:08:48,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:48,675 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:08:48,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:48,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:48,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:48,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash 334651421, now seen corresponding path program 1 times [2024-11-14 04:08:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922117481] [2024-11-14 04:08:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:48,878 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 [2024-11-14 04:08:48,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:48,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:48,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:49,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:08:49,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:49,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:49,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:49,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922117481] [2024-11-14 04:08:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922117481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:49,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:49,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:08:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329130841] [2024-11-14 04:08:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:49,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:08:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:08:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:49,085 INFO L87 Difference]: Start difference. First operand 1683 states and 1927 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:08:49,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:49,148 INFO L93 Difference]: Finished difference Result 1641 states and 1884 transitions. [2024-11-14 04:08:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:08:49,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 04:08:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:49,156 INFO L225 Difference]: With dead ends: 1641 [2024-11-14 04:08:49,156 INFO L226 Difference]: Without dead ends: 1641 [2024-11-14 04:08:49,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:08:49,157 INFO L432 NwaCegarLoop]: 1541 mSDtfsCounter, 71 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:49,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3019 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:08:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2024-11-14 04:08:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1641. [2024-11-14 04:08:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 936 states have (on average 1.9786324786324787) internal successors, (1852), 1632 states have internal predecessors, (1852), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1884 transitions. [2024-11-14 04:08:49,201 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1884 transitions. Word has length 11 [2024-11-14 04:08:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:49,202 INFO L471 AbstractCegarLoop]: Abstraction has 1641 states and 1884 transitions. [2024-11-14 04:08:49,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:08:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1884 transitions. [2024-11-14 04:08:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:08:49,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:49,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:08:49,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:49,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:49,404 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:49,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash -522536810, now seen corresponding path program 1 times [2024-11-14 04:08:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:49,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720947091] [2024-11-14 04:08:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:49,406 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 [2024-11-14 04:08:49,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:49,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:49,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:49,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:08:49,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:49,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:49,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720947091] [2024-11-14 04:08:49,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720947091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:49,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:08:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874667583] [2024-11-14 04:08:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:49,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:08:49,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:08:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:08:49,676 INFO L87 Difference]: Start difference. First operand 1641 states and 1884 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-14 04:08:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:49,815 INFO L93 Difference]: Finished difference Result 1619 states and 1855 transitions. [2024-11-14 04:08:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:08:49,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-14 04:08:49,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:49,824 INFO L225 Difference]: With dead ends: 1619 [2024-11-14 04:08:49,824 INFO L226 Difference]: Without dead ends: 1619 [2024-11-14 04:08:49,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:08:49,827 INFO L432 NwaCegarLoop]: 1496 mSDtfsCounter, 48 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 4462 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:49,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 4462 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:08:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-14 04:08:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1619. [2024-11-14 04:08:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 928 states have (on average 1.9644396551724137) internal successors, (1823), 1610 states have internal predecessors, (1823), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 1855 transitions. [2024-11-14 04:08:49,871 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 1855 transitions. Word has length 13 [2024-11-14 04:08:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:49,872 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 1855 transitions. [2024-11-14 04:08:49,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-14 04:08:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 1855 transitions. [2024-11-14 04:08:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:08:49,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:49,873 INFO L215 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] [2024-11-14 04:08:49,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:50,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:50,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:50,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash -103996956, now seen corresponding path program 1 times [2024-11-14 04:08:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771028767] [2024-11-14 04:08:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:50,076 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 [2024-11-14 04:08:50,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:50,079 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:50,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:50,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:08:50,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:50,321 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 [2024-11-14 04:08:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:50,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:50,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:50,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771028767] [2024-11-14 04:08:50,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771028767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:50,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:50,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:08:50,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717669358] [2024-11-14 04:08:50,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:50,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:08:50,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:08:50,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:08:50,444 INFO L87 Difference]: Start difference. First operand 1619 states and 1855 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-14 04:08:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:55,033 INFO L93 Difference]: Finished difference Result 1619 states and 1855 transitions. [2024-11-14 04:08:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:08:55,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-14 04:08:55,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:55,041 INFO L225 Difference]: With dead ends: 1619 [2024-11-14 04:08:55,041 INFO L226 Difference]: Without dead ends: 1619 [2024-11-14 04:08:55,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:08:55,042 INFO L432 NwaCegarLoop]: 949 mSDtfsCounter, 979 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:55,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1832 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-14 04:08:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-14 04:08:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1615. [2024-11-14 04:08:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 928 states have (on average 1.9601293103448276) internal successors, (1819), 1606 states have internal predecessors, (1819), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:08:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 1851 transitions. [2024-11-14 04:08:55,080 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 1851 transitions. Word has length 27 [2024-11-14 04:08:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:55,081 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 1851 transitions. [2024-11-14 04:08:55,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-14 04:08:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 1851 transitions. [2024-11-14 04:08:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:08:55,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:55,082 INFO L215 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] [2024-11-14 04:08:55,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-14 04:08:55,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:08:55,286 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:08:55,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:55,286 INFO L85 PathProgramCache]: Analyzing trace with hash -103996955, now seen corresponding path program 1 times [2024-11-14 04:08:55,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:08:55,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714692448] [2024-11-14 04:08:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:55,287 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 [2024-11-14 04:08:55,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:08:55,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:08:55,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:08:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:55,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:08:55,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:55,515 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 [2024-11-14 04:08:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:55,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:08:55,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:08:55,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714692448] [2024-11-14 04:08:55,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714692448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:55,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:08:55,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:08:55,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804768896] [2024-11-14 04:08:55,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:55,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:08:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:08:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:08:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:08:55,874 INFO L87 Difference]: Start difference. First operand 1615 states and 1851 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-14 04:09:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:01,517 INFO L93 Difference]: Finished difference Result 1768 states and 1871 transitions. [2024-11-14 04:09:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:09:01,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-14 04:09:01,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:01,522 INFO L225 Difference]: With dead ends: 1768 [2024-11-14 04:09:01,522 INFO L226 Difference]: Without dead ends: 1768 [2024-11-14 04:09:01,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:09:01,523 INFO L432 NwaCegarLoop]: 1315 mSDtfsCounter, 455 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:01,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 2723 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-14 04:09:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2024-11-14 04:09:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1611. [2024-11-14 04:09:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 928 states have (on average 1.9558189655172413) internal successors, (1815), 1602 states have internal predecessors, (1815), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:09:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 1847 transitions. [2024-11-14 04:09:01,558 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 1847 transitions. Word has length 27 [2024-11-14 04:09:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:01,559 INFO L471 AbstractCegarLoop]: Abstraction has 1611 states and 1847 transitions. [2024-11-14 04:09:01,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-14 04:09:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 1847 transitions. [2024-11-14 04:09:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 04:09:01,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:01,560 INFO L215 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] [2024-11-14 04:09:01,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:01,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:09:01,760 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:01,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2130343620, now seen corresponding path program 1 times [2024-11-14 04:09:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:01,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110003939] [2024-11-14 04:09:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:01,761 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 [2024-11-14 04:09:01,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:01,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:01,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:02,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:09:02,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:02,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:09:02,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:02,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110003939] [2024-11-14 04:09:02,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110003939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:02,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:09:02,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:09:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405483928] [2024-11-14 04:09:02,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:02,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:09:02,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:09:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:09:02,124 INFO L87 Difference]: Start difference. First operand 1611 states and 1847 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-11-14 04:09:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:02,220 INFO L93 Difference]: Finished difference Result 1605 states and 1837 transitions. [2024-11-14 04:09:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:09:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2024-11-14 04:09:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:02,225 INFO L225 Difference]: With dead ends: 1605 [2024-11-14 04:09:02,225 INFO L226 Difference]: Without dead ends: 1605 [2024-11-14 04:09:02,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:09:02,227 INFO L432 NwaCegarLoop]: 1490 mSDtfsCounter, 21 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4439 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:02,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4439 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:09:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2024-11-14 04:09:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1605. [2024-11-14 04:09:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 922 states have (on average 1.9577006507592192) internal successors, (1805), 1596 states have internal predecessors, (1805), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:09:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1837 transitions. [2024-11-14 04:09:02,258 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1837 transitions. Word has length 43 [2024-11-14 04:09:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:02,259 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 1837 transitions. [2024-11-14 04:09:02,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-11-14 04:09:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1837 transitions. [2024-11-14 04:09:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:09:02,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:02,263 INFO L215 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] [2024-11-14 04:09:02,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:02,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:09:02,465 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:02,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2044141320, now seen corresponding path program 1 times [2024-11-14 04:09:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455290978] [2024-11-14 04:09:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:02,466 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 [2024-11-14 04:09:02,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:02,468 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:02,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:02,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:09:02,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:03,123 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:09:03,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455290978] [2024-11-14 04:09:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455290978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:03,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:09:03,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:09:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041653951] [2024-11-14 04:09:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:03,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:09:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:09:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:09:03,125 INFO L87 Difference]: Start difference. First operand 1605 states and 1837 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-14 04:09:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:03,456 INFO L93 Difference]: Finished difference Result 2002 states and 2271 transitions. [2024-11-14 04:09:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:09:03,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2024-11-14 04:09:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:03,463 INFO L225 Difference]: With dead ends: 2002 [2024-11-14 04:09:03,464 INFO L226 Difference]: Without dead ends: 2002 [2024-11-14 04:09:03,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:09:03,465 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 365 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:03,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 3015 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:09:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2024-11-14 04:09:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1652. [2024-11-14 04:09:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 969 states have (on average 1.91124871001032) internal successors, (1852), 1643 states have internal predecessors, (1852), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:09:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1884 transitions. [2024-11-14 04:09:03,498 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1884 transitions. Word has length 51 [2024-11-14 04:09:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:03,498 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 1884 transitions. [2024-11-14 04:09:03,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-14 04:09:03,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1884 transitions. [2024-11-14 04:09:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:09:03,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:03,499 INFO L215 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] [2024-11-14 04:09:03,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-14 04:09:03,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:09:03,700 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:03,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1434711606, now seen corresponding path program 1 times [2024-11-14 04:09:03,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:03,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727258906] [2024-11-14 04:09:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:03,702 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 [2024-11-14 04:09:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:03,704 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:03,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:04,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:09:04,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:04,189 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 [2024-11-14 04:09:04,197 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 [2024-11-14 04:09:04,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:09:04,936 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 [2024-11-14 04:09:04,963 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:09:04,963 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 [2024-11-14 04:09:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:04,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:09:04,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727258906] [2024-11-14 04:09:04,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727258906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:04,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:09:04,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:09:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109184063] [2024-11-14 04:09:04,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:04,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:09:04,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:09:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:09:04,993 INFO L87 Difference]: Start difference. First operand 1652 states and 1884 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-14 04:09:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:08,544 INFO L93 Difference]: Finished difference Result 1568 states and 1800 transitions. [2024-11-14 04:09:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:09:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2024-11-14 04:09:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:08,548 INFO L225 Difference]: With dead ends: 1568 [2024-11-14 04:09:08,549 INFO L226 Difference]: Without dead ends: 1568 [2024-11-14 04:09:08,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:09:08,549 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 1764 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:08,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 1014 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-14 04:09:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2024-11-14 04:09:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1391. [2024-11-14 04:09:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 792 states have (on average 1.8156565656565657) internal successors, (1438), 1382 states have internal predecessors, (1438), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:09:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1470 transitions. [2024-11-14 04:09:08,577 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1470 transitions. Word has length 54 [2024-11-14 04:09:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:08,578 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 1470 transitions. [2024-11-14 04:09:08,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-14 04:09:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1470 transitions. [2024-11-14 04:09:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 04:09:08,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:08,581 INFO L215 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] [2024-11-14 04:09:08,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:08,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:09:08,785 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:08,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1138270683, now seen corresponding path program 1 times [2024-11-14 04:09:08,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:08,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865749175] [2024-11-14 04:09:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:08,786 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 [2024-11-14 04:09:08,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:08,788 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:08,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:09,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:09:09,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:09,105 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 [2024-11-14 04:09:09,128 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 [2024-11-14 04:09:09,165 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 [2024-11-14 04:09:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:09,180 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:09:09,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:09,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865749175] [2024-11-14 04:09:09,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865749175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:09,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:09:09,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:09:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643344072] [2024-11-14 04:09:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:09,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:09:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:09:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:09:09,182 INFO L87 Difference]: Start difference. First operand 1391 states and 1470 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-14 04:09:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:13,824 INFO L93 Difference]: Finished difference Result 1390 states and 1469 transitions. [2024-11-14 04:09:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:09:13,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2024-11-14 04:09:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:13,828 INFO L225 Difference]: With dead ends: 1390 [2024-11-14 04:09:13,828 INFO L226 Difference]: Without dead ends: 1390 [2024-11-14 04:09:13,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:09:13,829 INFO L432 NwaCegarLoop]: 1417 mSDtfsCounter, 2 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:13,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3606 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-14 04:09:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-14 04:09:13,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2024-11-14 04:09:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 792 states have (on average 1.8143939393939394) internal successors, (1437), 1381 states have internal predecessors, (1437), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:09:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1469 transitions. [2024-11-14 04:09:13,850 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1469 transitions. Word has length 59 [2024-11-14 04:09:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:13,850 INFO L471 AbstractCegarLoop]: Abstraction has 1390 states and 1469 transitions. [2024-11-14 04:09:13,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-14 04:09:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1469 transitions. [2024-11-14 04:09:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 04:09:13,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:13,851 INFO L215 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] [2024-11-14 04:09:13,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-14 04:09:14,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:09:14,052 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:14,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1138270684, now seen corresponding path program 1 times [2024-11-14 04:09:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:14,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343137366] [2024-11-14 04:09:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:14,054 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 [2024-11-14 04:09:14,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:14,056 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:14,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:14,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:09:14,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:14,409 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 [2024-11-14 04:09:14,439 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 [2024-11-14 04:09:14,447 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 [2024-11-14 04:09:14,526 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 [2024-11-14 04:09:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:14,553 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:09:14,553 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343137366] [2024-11-14 04:09:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343137366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:14,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:09:14,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:09:14,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779380727] [2024-11-14 04:09:14,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:14,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:09:14,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:14,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:09:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:09:14,555 INFO L87 Difference]: Start difference. First operand 1390 states and 1469 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-14 04:09:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:20,290 INFO L93 Difference]: Finished difference Result 1389 states and 1468 transitions. [2024-11-14 04:09:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:09:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2024-11-14 04:09:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:20,294 INFO L225 Difference]: With dead ends: 1389 [2024-11-14 04:09:20,294 INFO L226 Difference]: Without dead ends: 1389 [2024-11-14 04:09:20,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:09:20,295 INFO L432 NwaCegarLoop]: 1417 mSDtfsCounter, 1 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:20,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3649 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-14 04:09:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-11-14 04:09:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2024-11-14 04:09:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 791 states have (on average 1.8154235145385589) internal successors, (1436), 1380 states have internal predecessors, (1436), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:09:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1468 transitions. [2024-11-14 04:09:20,320 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1468 transitions. Word has length 59 [2024-11-14 04:09:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:20,320 INFO L471 AbstractCegarLoop]: Abstraction has 1389 states and 1468 transitions. [2024-11-14 04:09:20,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-14 04:09:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1468 transitions. [2024-11-14 04:09:20,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-14 04:09:20,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:20,322 INFO L215 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] [2024-11-14 04:09:20,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-14 04:09:20,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:09:20,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:20,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1325945726, now seen corresponding path program 1 times [2024-11-14 04:09:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048746270] [2024-11-14 04:09:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:20,524 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 [2024-11-14 04:09:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:20,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:20,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:20,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:09:20,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:20,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:09:20,871 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:20,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048746270] [2024-11-14 04:09:20,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048746270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:20,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:09:20,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:09:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337505395] [2024-11-14 04:09:20,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:20,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:09:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:20,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:09:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:09:20,872 INFO L87 Difference]: Start difference. First operand 1389 states and 1468 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2024-11-14 04:09:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:20,932 INFO L93 Difference]: Finished difference Result 1392 states and 1473 transitions. [2024-11-14 04:09:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:09:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 67 [2024-11-14 04:09:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:20,937 INFO L225 Difference]: With dead ends: 1392 [2024-11-14 04:09:20,937 INFO L226 Difference]: Without dead ends: 1392 [2024-11-14 04:09:20,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:09:20,938 INFO L432 NwaCegarLoop]: 1416 mSDtfsCounter, 0 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:20,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4240 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:09:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2024-11-14 04:09:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1392. [2024-11-14 04:09:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 793 states have (on average 1.814627994955864) internal successors, (1439), 1383 states have internal predecessors, (1439), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-14 04:09:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1473 transitions. [2024-11-14 04:09:20,961 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1473 transitions. Word has length 67 [2024-11-14 04:09:20,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:20,961 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 1473 transitions. [2024-11-14 04:09:20,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2024-11-14 04:09:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1473 transitions. [2024-11-14 04:09:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 04:09:20,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:20,962 INFO L215 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, 1] [2024-11-14 04:09:20,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:21,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:09:21,163 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:21,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2092121801, now seen corresponding path program 1 times [2024-11-14 04:09:21,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:21,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846686708] [2024-11-14 04:09:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:21,164 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 [2024-11-14 04:09:21,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:21,166 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:21,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:21,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:09:21,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:21,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:21,653 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846686708] [2024-11-14 04:09:21,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846686708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:09:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [672133653] [2024-11-14 04:09:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:21,654 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:09:21,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:09:21,660 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:09:21,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-14 04:09:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:22,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:09:22,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:22,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:22,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [672133653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:09:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032089519] [2024-11-14 04:09:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:22,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:09:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:09:22,309 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:09:22,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:09:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:22,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:09:22,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:22,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032089519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:09:22,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:09:22,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-14 04:09:22,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499851120] [2024-11-14 04:09:22,759 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:09:22,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:09:22,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:22,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:09:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:09:22,760 INFO L87 Difference]: Start difference. First operand 1392 states and 1473 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2024-11-14 04:09:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:23,022 INFO L93 Difference]: Finished difference Result 1404 states and 1491 transitions. [2024-11-14 04:09:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:09:23,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 68 [2024-11-14 04:09:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:23,031 INFO L225 Difference]: With dead ends: 1404 [2024-11-14 04:09:23,032 INFO L226 Difference]: Without dead ends: 1404 [2024-11-14 04:09:23,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:09:23,035 INFO L432 NwaCegarLoop]: 1415 mSDtfsCounter, 8 mSDsluCounter, 5642 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7057 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:23,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7057 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:09:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2024-11-14 04:09:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1402. [2024-11-14 04:09:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 802 states have (on average 1.8129675810473815) internal successors, (1454), 1392 states have internal predecessors, (1454), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-14 04:09:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1488 transitions. [2024-11-14 04:09:23,061 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1488 transitions. Word has length 68 [2024-11-14 04:09:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:23,062 INFO L471 AbstractCegarLoop]: Abstraction has 1402 states and 1488 transitions. [2024-11-14 04:09:23,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2024-11-14 04:09:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1488 transitions. [2024-11-14 04:09:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 04:09:23,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:23,064 INFO L215 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, 1] [2024-11-14 04:09:23,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-14 04:09:23,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:23,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:09:23,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:09:23,665 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:09:23,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash 670151106, now seen corresponding path program 2 times [2024-11-14 04:09:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:09:23,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397666357] [2024-11-14 04:09:23,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:09:23,666 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 [2024-11-14 04:09:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:09:23,669 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:09:23,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:09:24,170 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:09:24,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:09:24,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:09:24,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:24,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:24,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:09:24,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397666357] [2024-11-14 04:09:24,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397666357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:09:24,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1350138153] [2024-11-14 04:09:24,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:09:24,523 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:09:24,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:09:24,527 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:09:24,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-14 04:09:25,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:09:25,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:09:25,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:09:25,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:25,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:09:25,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1350138153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:09:25,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329427739] [2024-11-14 04:09:25,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:09:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:09:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:09:25,989 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:09:25,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 04:09:49,280 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:09:49,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:09:49,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:09:49,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:49,307 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 [2024-11-14 04:09:49,471 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:09:49,472 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 [2024-11-14 04:09:49,523 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 [2024-11-14 04:09:49,954 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 04:09:49,954 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 [2024-11-14 04:09:50,059 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 [2024-11-14 04:09:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:09:50,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:50,291 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-14 04:09:50,291 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 [2024-11-14 04:09:50,308 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1259 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1259) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-14 04:09:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329427739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:09:50,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-14 04:09:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2024-11-14 04:09:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081323917] [2024-11-14 04:09:50,312 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-14 04:09:50,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 04:09:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:09:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 04:09:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2024-11-14 04:09:50,314 INFO L87 Difference]: Start difference. First operand 1402 states and 1488 transitions. Second operand has 23 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 states have internal predecessors, (141), 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) [2024-11-14 04:10:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:07,351 INFO L93 Difference]: Finished difference Result 1418 states and 1511 transitions. [2024-11-14 04:10:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 04:10:07,352 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 states have internal predecessors, (141), 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 71 [2024-11-14 04:10:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:07,356 INFO L225 Difference]: With dead ends: 1418 [2024-11-14 04:10:07,356 INFO L226 Difference]: Without dead ends: 1412 [2024-11-14 04:10:07,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=386, Invalid=1969, Unknown=1, NotChecked=94, Total=2450 [2024-11-14 04:10:07,358 INFO L432 NwaCegarLoop]: 927 mSDtfsCounter, 928 mSDsluCounter, 8663 mSDsCounter, 0 mSdLazyCounter, 6731 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 9590 SdHoareTripleChecker+Invalid, 6789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 6731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:07,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 9590 Invalid, 6789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 6731 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2024-11-14 04:10:07,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-14 04:10:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1410. [2024-11-14 04:10:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 811 states have (on average 1.8051787916152897) internal successors, (1464), 1400 states have internal predecessors, (1464), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-14 04:10:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1498 transitions. [2024-11-14 04:10:07,392 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1498 transitions. Word has length 71 [2024-11-14 04:10:07,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:07,392 INFO L471 AbstractCegarLoop]: Abstraction has 1410 states and 1498 transitions. [2024-11-14 04:10:07,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 states have internal predecessors, (141), 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) [2024-11-14 04:10:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1498 transitions. [2024-11-14 04:10:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-14 04:10:07,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:07,394 INFO L215 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, 1] [2024-11-14 04:10:07,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-14 04:10:07,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:10:07,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 04:10:07,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:07,995 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:10:07,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash 676924835, now seen corresponding path program 1 times [2024-11-14 04:10:07,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:10:07,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205571939] [2024-11-14 04:10:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:07,996 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 [2024-11-14 04:10:07,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:10:07,998 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:10:07,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:10:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:08,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:10:08,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:08,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:09,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:10:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205571939] [2024-11-14 04:10:09,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205571939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080270424] [2024-11-14 04:10:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:09,281 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:10:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:10:09,284 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:10:09,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-14 04:10:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:10,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:10:10,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:10,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:10,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080270424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:10,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72678896] [2024-11-14 04:10:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:10,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:10,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:10,360 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:10,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 04:10:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:10,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:10:10,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:10,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:11,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72678896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:11,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:10:11,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2024-11-14 04:10:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987090612] [2024-11-14 04:10:11,952 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:11,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-14 04:10:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:10:11,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-14 04:10:11,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 04:10:11,954 INFO L87 Difference]: Start difference. First operand 1410 states and 1498 transitions. Second operand has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 38 states have internal predecessors, (102), 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) [2024-11-14 04:10:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:14,354 INFO L93 Difference]: Finished difference Result 1436 states and 1540 transitions. [2024-11-14 04:10:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-14 04:10:14,355 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 38 states have internal predecessors, (102), 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 77 [2024-11-14 04:10:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:14,357 INFO L225 Difference]: With dead ends: 1436 [2024-11-14 04:10:14,358 INFO L226 Difference]: Without dead ends: 1430 [2024-11-14 04:10:14,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1168, Invalid=2254, Unknown=0, NotChecked=0, Total=3422 [2024-11-14 04:10:14,359 INFO L432 NwaCegarLoop]: 1415 mSDtfsCounter, 26 mSDsluCounter, 21146 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 22561 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:14,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 22561 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 04:10:14,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2024-11-14 04:10:14,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1428. [2024-11-14 04:10:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 829 states have (on average 1.7937273823884199) internal successors, (1487), 1418 states have internal predecessors, (1487), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-14 04:10:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1521 transitions. [2024-11-14 04:10:14,380 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1521 transitions. Word has length 77 [2024-11-14 04:10:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:14,380 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 1521 transitions. [2024-11-14 04:10:14,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 38 states have internal predecessors, (102), 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) [2024-11-14 04:10:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1521 transitions. [2024-11-14 04:10:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-14 04:10:14,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:14,381 INFO L215 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, 1] [2024-11-14 04:10:14,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-14 04:10:14,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:14,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:10:14,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:10:14,982 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:10:14,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash 65047907, now seen corresponding path program 2 times [2024-11-14 04:10:14,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:10:14,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025650368] [2024-11-14 04:10:14,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:10:14,983 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 [2024-11-14 04:10:14,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:10:14,985 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:10:14,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:10:15,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:10:15,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:10:15,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-14 04:10:15,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:16,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:18,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:10:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025650368] [2024-11-14 04:10:18,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025650368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1406736673] [2024-11-14 04:10:18,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:10:18,609 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:10:18,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:10:18,611 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:10:18,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-14 04:10:19,945 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:10:19,945 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:10:19,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-14 04:10:19,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:20,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1406736673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:20,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998747548] [2024-11-14 04:10:20,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:10:20,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:20,821 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:20,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 04:10:48,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:10:48,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:10:48,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 04:10:48,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:49,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:10:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998747548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:50,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:10:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 68 [2024-11-14 04:10:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584802178] [2024-11-14 04:10:50,339 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:50,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-14 04:10:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:10:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-14 04:10:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=3416, Unknown=0, NotChecked=0, Total=4556 [2024-11-14 04:10:50,343 INFO L87 Difference]: Start difference. First operand 1428 states and 1521 transitions. Second operand has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 68 states have internal predecessors, (131), 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) [2024-11-14 04:11:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:02,454 INFO L93 Difference]: Finished difference Result 1470 states and 1596 transitions. [2024-11-14 04:11:02,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-14 04:11:02,455 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 68 states have internal predecessors, (131), 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 89 [2024-11-14 04:11:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:02,459 INFO L225 Difference]: With dead ends: 1470 [2024-11-14 04:11:02,459 INFO L226 Difference]: Without dead ends: 1464 [2024-11-14 04:11:02,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3648, Invalid=8784, Unknown=0, NotChecked=0, Total=12432 [2024-11-14 04:11:02,463 INFO L432 NwaCegarLoop]: 1415 mSDtfsCounter, 40 mSDsluCounter, 35278 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 36693 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:02,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 36693 Invalid, 2776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-14 04:11:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2024-11-14 04:11:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2024-11-14 04:11:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 865 states have (on average 1.7745664739884393) internal successors, (1535), 1454 states have internal predecessors, (1535), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-14 04:11:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1569 transitions. [2024-11-14 04:11:02,483 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1569 transitions. Word has length 89 [2024-11-14 04:11:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:02,483 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 1569 transitions. [2024-11-14 04:11:02,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 68 states have internal predecessors, (131), 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) [2024-11-14 04:11:02,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1569 transitions. [2024-11-14 04:11:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-14 04:11:02,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:02,485 INFO L215 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] [2024-11-14 04:11:02,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-11-14 04:11:02,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:11:02,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 04:11:03,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:03,086 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 04:11:03,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash 172459587, now seen corresponding path program 3 times [2024-11-14 04:11:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:11:03,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97109702] [2024-11-14 04:11:03,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:11:03,087 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 [2024-11-14 04:11:03,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:11:03,088 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:11:03,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:11:05,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-14 04:11:05,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:11:05,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-14 04:11:05,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:05,347 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 [2024-11-14 04:11:05,655 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:11:05,655 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 [2024-11-14 04:11:05,667 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 [2024-11-14 04:11:05,707 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 [2024-11-14 04:11:05,712 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 [2024-11-14 04:11:05,827 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 [2024-11-14 04:11:05,834 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 [2024-11-14 04:11:06,782 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-14 04:11:06,783 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 [2024-11-14 04:11:06,790 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 [2024-11-14 04:11:06,847 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 [2024-11-14 04:11:06,853 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 [2024-11-14 04:11:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-14 04:11:06,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:08,356 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2899 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2900 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2899) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2900) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2899) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2024-11-14 04:11:08,360 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:11:08,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97109702] [2024-11-14 04:11:08,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97109702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:08,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1556447538] [2024-11-14 04:11:08,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:11:08,361 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:11:08,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:11:08,362 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:11:08,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-14 04:16:04,466 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-14 04:16:04,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:16:04,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-14 04:16:04,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:16:04,621 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 [2024-11-14 04:16:04,750 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 04:16:04,750 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 [2024-11-14 04:16:04,758 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 [2024-11-14 04:16:04,799 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 [2024-11-14 04:16:04,809 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 [2024-11-14 04:16:04,984 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 [2024-11-14 04:16:04,989 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 [2024-11-14 04:16:05,754 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 04:16:05,754 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 [2024-11-14 04:16:05,762 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 [2024-11-14 04:16:05,828 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 [2024-11-14 04:16:05,838 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 [2024-11-14 04:16:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-14 04:16:05,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:16:07,159 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3437 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3437) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_3437 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3436 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3437) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3436) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-14 04:16:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1556447538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:16:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692644572] [2024-11-14 04:16:07,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:16:07,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:16:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:16:07,166 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:16:07,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e473d2c-ac1e-4e78-b229-82f8298e2fe8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process