./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_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_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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_5d184d70-a793-4207-a535-29ff49696809/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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:29:14,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:29:14,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 03:29:14,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:29:14,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:29:14,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:29:14,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:29:14,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:29:14,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:29:14,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:29:14,550 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:29:14,550 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:29:14,550 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:29:14,550 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:29:14,551 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:29:14,551 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:29:14,551 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:29:14,551 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:29:14,551 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:29:14,552 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:29:14,552 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:29:14,552 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:29:14,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:29:14,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:29:14,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:29:14,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:29:14,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:29:14,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:29:14,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:29:14,553 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:29:14,553 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:29:14,553 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:29:14,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:29:14,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:29:14,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:29:14,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:29:14,555 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:29:14,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:29:14,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:29:14,555 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:29:14,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:29:14,555 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_5d184d70-a793-4207-a535-29ff49696809/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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2024-11-14 03:29:14,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:29:14,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:29:14,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:29:14,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:29:14,884 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:29:14,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i Unable to find full path for "g++" [2024-11-14 03:29:16,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:29:17,239 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:29:17,240 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i [2024-11-14 03:29:17,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data/1513625f2/ea82ba50cf934a3a843a3e2f0e51b9cd/FLAGcfce17187 [2024-11-14 03:29:17,294 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data/1513625f2/ea82ba50cf934a3a843a3e2f0e51b9cd [2024-11-14 03:29:17,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:29:17,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:29:17,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:29:17,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:29:17,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:29:17,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:29:17" (1/1) ... [2024-11-14 03:29:17,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4aa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:17, skipping insertion in model container [2024-11-14 03:29:17,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:29:17" (1/1) ... [2024-11-14 03:29:17,380 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:29:17,972 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 03:29:18,030 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 03:29:18,038 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 03:29:18,047 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 03:29:18,059 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 03:29:18,108 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 03:29:18,111 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 03:29:18,114 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 03:29:18,120 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 03:29:18,131 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 03:29:18,132 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 03:29:18,134 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 03:29:18,136 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 03:29:18,137 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 03:29:18,138 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 03:29:18,146 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 03:29:18,147 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 03:29:18,148 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 03:29:18,149 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 03:29:18,155 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 03:29:18,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:29:18,189 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 03:29:18,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ecebabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:18, skipping insertion in model container [2024-11-14 03:29:18,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:29:18,191 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 03:29:18,193 INFO L158 Benchmark]: Toolchain (without parser) took 892.27ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 70.3MB in the end (delta: 21.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:29:18,193 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:29:18,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 888.00ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 70.3MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:29:18,196 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 888.00ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 70.3MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: 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_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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_5d184d70-a793-4207-a535-29ff49696809/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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:29:20,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:29:21,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 03:29:21,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:29:21,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:29:21,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:29:21,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:29:21,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:29:21,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:29:21,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:29:21,060 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:29:21,060 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:29:21,060 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:29:21,060 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:29:21,060 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:29:21,060 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:29:21,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:29:21,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:29:21,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:29:21,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:29:21,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:29:21,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:29:21,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:29:21,063 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:29:21,063 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:29:21,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:29:21,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:29:21,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:29:21,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 03:29:21,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:29:21,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:29:21,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:29:21,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:29:21,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:29:21,066 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 03:29:21,067 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 03:29:21,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:29:21,067 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:29:21,067 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_5d184d70-a793-4207-a535-29ff49696809/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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2024-11-14 03:29:21,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:29:21,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:29:21,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:29:21,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:29:21,428 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:29:21,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i Unable to find full path for "g++" [2024-11-14 03:29:23,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:29:23,967 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:29:23,968 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i [2024-11-14 03:29:23,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data/a967a6b8a/6ab886003efd42e49f9bff4d67d60f05/FLAG864b58bc7 [2024-11-14 03:29:24,122 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/data/a967a6b8a/6ab886003efd42e49f9bff4d67d60f05 [2024-11-14 03:29:24,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:29:24,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:29:24,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:29:24,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:29:24,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:29:24,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:29:24" (1/1) ... [2024-11-14 03:29:24,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330ae2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:24, skipping insertion in model container [2024-11-14 03:29:24,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:29:24" (1/1) ... [2024-11-14 03:29:24,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:29:24,719 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 03:29:24,772 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 03:29:24,778 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 03:29:24,786 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 03:29:24,796 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 03:29:24,844 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 03:29:24,847 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 03:29:24,851 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 03:29:24,860 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 03:29:24,876 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 03:29:24,878 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 03:29:24,881 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 03:29:24,883 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 03:29:24,884 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 03:29:24,886 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 03:29:24,894 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 03:29:24,895 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 03:29:24,897 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 03:29:24,898 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 03:29:24,904 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 03:29:24,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:29:24,936 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 03:29:24,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:29:24,999 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 03:29:25,043 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 03:29:25,046 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 03:29:25,054 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 03:29:25,059 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 03:29:25,086 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 03:29:25,089 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 03:29:25,096 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 03:29:25,106 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 03:29:25,124 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 03:29:25,129 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 03:29:25,131 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 03:29:25,133 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 03:29:25,135 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 03:29:25,135 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 03:29:25,147 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 03:29:25,148 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 03:29:25,151 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 03:29:25,151 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 03:29:25,156 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 03:29:25,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:29:25,171 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:29:25,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:29:25,412 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:29:25,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25 WrapperNode [2024-11-14 03:29:25,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:29:25,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:29:25,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:29:25,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:29:25,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,525 INFO L138 Inliner]: procedures = 179, calls = 425, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1415 [2024-11-14 03:29:25,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:29:25,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:29:25,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:29:25,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:29:25,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:29:25,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:29:25,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:29:25,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:29:25,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (1/1) ... [2024-11-14 03:29:25,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:29:25,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:29:25,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:29:25,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:29:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-14 03:29:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 03:29:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 03:29:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 03:29:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:29:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:29:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:29:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:29:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:29:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 03:29:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 03:29:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:29:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:29:26,108 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:29:26,110 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:29:26,113 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-14 03:29:33,401 INFO L? ?]: Removed 1736 outVars from TransFormulas that were not future-live. [2024-11-14 03:29:33,401 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:29:33,444 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:29:33,444 INFO L316 CfgBuilder]: Removed 77 assume(true) statements. [2024-11-14 03:29:33,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:29:33 BoogieIcfgContainer [2024-11-14 03:29:33,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:29:33,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:29:33,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:29:33,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:29:33,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:29:24" (1/3) ... [2024-11-14 03:29:33,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5482285b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:29:33, skipping insertion in model container [2024-11-14 03:29:33,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:29:25" (2/3) ... [2024-11-14 03:29:33,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5482285b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:29:33, skipping insertion in model container [2024-11-14 03:29:33,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:29:33" (3/3) ... [2024-11-14 03:29:33,460 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test4-3.i [2024-11-14 03:29:33,481 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:29:33,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_nondet_test4-3.i that has 2 procedures, 1610 locations, 1 initial locations, 44 loop locations, and 831 error locations. [2024-11-14 03:29:33,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:29:33,590 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;@4f6f1746, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:29:33,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 831 error locations. [2024-11-14 03:29:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 1610 states, 777 states have (on average 2.2625482625482625) internal successors, (1758), 1602 states have internal predecessors, (1758), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:29:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:29:33,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:33,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:29:33,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr830ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:29:33,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1204975, now seen corresponding path program 1 times [2024-11-14 03:29:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:33,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587911323] [2024-11-14 03:29:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:33,633 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 03:29:33,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:33,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:33,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:33,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:29:33,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:33,898 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 03:29:33,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:33,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:33,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587911323] [2024-11-14 03:29:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587911323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:33,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:33,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:29:33,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799427441] [2024-11-14 03:29:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:33,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:29:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:29:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:29:33,938 INFO L87 Difference]: Start difference. First operand has 1610 states, 777 states have (on average 2.2625482625482625) internal successors, (1758), 1602 states have internal predecessors, (1758), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 03:29:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:37,491 INFO L93 Difference]: Finished difference Result 1971 states and 2066 transitions. [2024-11-14 03:29:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:29:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-14 03:29:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:37,515 INFO L225 Difference]: With dead ends: 1971 [2024-11-14 03:29:37,515 INFO L226 Difference]: Without dead ends: 1967 [2024-11-14 03:29:37,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:29:37,521 INFO L432 NwaCegarLoop]: 1656 mSDtfsCounter, 397 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:37,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2501 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 03:29:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2024-11-14 03:29:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1608. [2024-11-14 03:29:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 786 states have (on average 2.1399491094147582) internal successors, (1682), 1600 states have internal predecessors, (1682), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:29:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 1694 transitions. [2024-11-14 03:29:37,643 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 1694 transitions. Word has length 4 [2024-11-14 03:29:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:37,644 INFO L471 AbstractCegarLoop]: Abstraction has 1608 states and 1694 transitions. [2024-11-14 03:29:37,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 03:29:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 1694 transitions. [2024-11-14 03:29:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 03:29:37,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:37,645 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 03:29:37,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Ended with exit code 0 [2024-11-14 03:29:37,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:37,848 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 03:29:37,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825422, now seen corresponding path program 1 times [2024-11-14 03:29:37,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:37,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488647769] [2024-11-14 03:29:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:37,854 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 03:29:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:37,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:37,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:38,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:29:38,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:38,076 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 03:29:38,094 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 03:29:38,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:38,094 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488647769] [2024-11-14 03:29:38,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488647769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:38,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:29:38,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892094946] [2024-11-14 03:29:38,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:38,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:29:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:38,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:29:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:29:38,101 INFO L87 Difference]: Start difference. First operand 1608 states and 1694 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 03:29:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:41,984 INFO L93 Difference]: Finished difference Result 1514 states and 1598 transitions. [2024-11-14 03:29:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:29:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 03:29:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:41,992 INFO L225 Difference]: With dead ends: 1514 [2024-11-14 03:29:41,993 INFO L226 Difference]: Without dead ends: 1514 [2024-11-14 03:29:41,993 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 03:29:41,994 INFO L432 NwaCegarLoop]: 957 mSDtfsCounter, 1029 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:41,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1159 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-14 03:29:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2024-11-14 03:29:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2024-11-14 03:29:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 786 states have (on average 2.017811704834606) internal successors, (1586), 1506 states have internal predecessors, (1586), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:29:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1598 transitions. [2024-11-14 03:29:42,056 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1598 transitions. Word has length 6 [2024-11-14 03:29:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:42,056 INFO L471 AbstractCegarLoop]: Abstraction has 1514 states and 1598 transitions. [2024-11-14 03:29:42,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 03:29:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1598 transitions. [2024-11-14 03:29:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 03:29:42,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:42,057 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 03:29:42,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:42,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:42,257 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 03:29:42,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825423, now seen corresponding path program 1 times [2024-11-14 03:29:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:42,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40211768] [2024-11-14 03:29:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:42,259 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 03:29:42,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:42,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:42,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:42,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:29:42,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:42,519 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 03:29:42,558 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 03:29:42,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:42,558 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:42,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40211768] [2024-11-14 03:29:42,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40211768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:42,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:42,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:29:42,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804913515] [2024-11-14 03:29:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:42,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:29:42,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:29:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:29:42,561 INFO L87 Difference]: Start difference. First operand 1514 states and 1598 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 03:29:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:47,190 INFO L93 Difference]: Finished difference Result 1834 states and 1938 transitions. [2024-11-14 03:29:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:29:47,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 03:29:47,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:47,199 INFO L225 Difference]: With dead ends: 1834 [2024-11-14 03:29:47,200 INFO L226 Difference]: Without dead ends: 1834 [2024-11-14 03:29:47,200 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 03:29:47,201 INFO L432 NwaCegarLoop]: 1323 mSDtfsCounter, 522 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:47,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1967 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-14 03:29:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2024-11-14 03:29:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1681. [2024-11-14 03:29:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 963 states have (on average 1.9792315680166148) internal successors, (1906), 1673 states have internal predecessors, (1906), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:29:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 1918 transitions. [2024-11-14 03:29:47,260 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 1918 transitions. Word has length 6 [2024-11-14 03:29:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:47,260 INFO L471 AbstractCegarLoop]: Abstraction has 1681 states and 1918 transitions. [2024-11-14 03:29:47,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 03:29:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 1918 transitions. [2024-11-14 03:29:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:29:47,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:47,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:47,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Ended with exit code 0 [2024-11-14 03:29:47,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:47,462 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 03:29:47,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1472485377, now seen corresponding path program 1 times [2024-11-14 03:29:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318312535] [2024-11-14 03:29:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:47,464 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 03:29:47,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:47,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:47,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:47,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:29:47,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:47,698 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 03:29:47,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:47,699 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:47,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318312535] [2024-11-14 03:29:47,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318312535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:47,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:47,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:29:47,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529773372] [2024-11-14 03:29:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:47,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:29:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:29:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:29:47,703 INFO L87 Difference]: Start difference. First operand 1681 states and 1918 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:29:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:48,862 INFO L93 Difference]: Finished difference Result 2450 states and 2813 transitions. [2024-11-14 03:29:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:29:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 03:29:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:48,873 INFO L225 Difference]: With dead ends: 2450 [2024-11-14 03:29:48,874 INFO L226 Difference]: Without dead ends: 2450 [2024-11-14 03:29:48,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 03:29:48,876 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 691 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 4419 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:48,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 4419 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:29:48,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2024-11-14 03:29:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2151. [2024-11-14 03:29:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1433 states have (on average 1.950453593859037) internal successors, (2795), 2140 states have internal predecessors, (2795), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:29:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2813 transitions. [2024-11-14 03:29:48,975 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2813 transitions. Word has length 7 [2024-11-14 03:29:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:48,976 INFO L471 AbstractCegarLoop]: Abstraction has 2151 states and 2813 transitions. [2024-11-14 03:29:48,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:29:48,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2813 transitions. [2024-11-14 03:29:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:29:48,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:48,978 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:48,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:49,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:49,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:29:49,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2014240042, now seen corresponding path program 1 times [2024-11-14 03:29:49,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251875833] [2024-11-14 03:29:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:49,182 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 03:29:49,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:49,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:49,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:49,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:29:49,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:49,433 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 03:29:49,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:49,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:49,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251875833] [2024-11-14 03:29:49,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251875833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:49,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:29:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219870938] [2024-11-14 03:29:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:49,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:29:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:29:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:29:49,436 INFO L87 Difference]: Start difference. First operand 2151 states and 2813 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 03:29:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:49,802 INFO L93 Difference]: Finished difference Result 2407 states and 2941 transitions. [2024-11-14 03:29:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:29:49,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-14 03:29:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:49,813 INFO L225 Difference]: With dead ends: 2407 [2024-11-14 03:29:49,813 INFO L226 Difference]: Without dead ends: 2407 [2024-11-14 03:29:49,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 03:29:49,814 INFO L432 NwaCegarLoop]: 1626 mSDtfsCounter, 503 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:49,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 3116 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:29:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2024-11-14 03:29:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2011. [2024-11-14 03:29:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1293 states have (on average 1.9613302397525136) internal successors, (2536), 2000 states have internal predecessors, (2536), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:29:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2554 transitions. [2024-11-14 03:29:49,863 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2554 transitions. Word has length 9 [2024-11-14 03:29:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:49,863 INFO L471 AbstractCegarLoop]: Abstraction has 2011 states and 2554 transitions. [2024-11-14 03:29:49,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 03:29:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2554 transitions. [2024-11-14 03:29:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:29:49,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:49,864 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:49,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Forceful destruction successful, exit code 0 [2024-11-14 03:29:50,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:50,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr629REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:29:50,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1244508194, now seen corresponding path program 1 times [2024-11-14 03:29:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:50,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986357300] [2024-11-14 03:29:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:50,066 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 03:29:50,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:50,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:50,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:50,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:29:50,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:50,344 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 03:29:50,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:50,346 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986357300] [2024-11-14 03:29:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986357300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:50,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:50,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:29:50,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520732775] [2024-11-14 03:29:50,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:50,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:29:50,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:50,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:29:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:29:50,348 INFO L87 Difference]: Start difference. First operand 2011 states and 2554 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:29:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:51,660 INFO L93 Difference]: Finished difference Result 2407 states and 2940 transitions. [2024-11-14 03:29:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:29:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 03:29:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:51,665 INFO L225 Difference]: With dead ends: 2407 [2024-11-14 03:29:51,665 INFO L226 Difference]: Without dead ends: 2401 [2024-11-14 03:29:51,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:29:51,666 INFO L432 NwaCegarLoop]: 1626 mSDtfsCounter, 505 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:51,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 4525 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:29:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2024-11-14 03:29:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2005. [2024-11-14 03:29:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1287 states have (on average 1.965034965034965) internal successors, (2529), 1994 states have internal predecessors, (2529), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:29:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2547 transitions. [2024-11-14 03:29:51,707 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2547 transitions. Word has length 12 [2024-11-14 03:29:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:51,708 INFO L471 AbstractCegarLoop]: Abstraction has 2005 states and 2547 transitions. [2024-11-14 03:29:51,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:29:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2547 transitions. [2024-11-14 03:29:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:29:51,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:51,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:51,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:51,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:51,909 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:29:51,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:51,910 INFO L85 PathProgramCache]: Analyzing trace with hash 759654968, now seen corresponding path program 1 times [2024-11-14 03:29:51,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:51,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329511742] [2024-11-14 03:29:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:51,910 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 03:29:51,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:51,912 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:51,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:52,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:29:52,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:52,122 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 03:29:52,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:52,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:52,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329511742] [2024-11-14 03:29:52,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329511742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:52,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:52,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:29:52,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288923429] [2024-11-14 03:29:52,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:52,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:29:52,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:52,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:29:52,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:29:52,123 INFO L87 Difference]: Start difference. First operand 2005 states and 2547 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:29:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:52,179 INFO L93 Difference]: Finished difference Result 1945 states and 2461 transitions. [2024-11-14 03:29:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:29:52,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 03:29:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:52,186 INFO L225 Difference]: With dead ends: 1945 [2024-11-14 03:29:52,186 INFO L226 Difference]: Without dead ends: 1945 [2024-11-14 03:29:52,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 03:29:52,187 INFO L432 NwaCegarLoop]: 1503 mSDtfsCounter, 71 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2943 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 03:29:52,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2943 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:29:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2024-11-14 03:29:52,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1945. [2024-11-14 03:29:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1251 states have (on average 1.952837729816147) internal successors, (2443), 1934 states have internal predecessors, (2443), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:29:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2461 transitions. [2024-11-14 03:29:52,238 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2461 transitions. Word has length 12 [2024-11-14 03:29:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:52,238 INFO L471 AbstractCegarLoop]: Abstraction has 1945 states and 2461 transitions. [2024-11-14 03:29:52,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:29:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2461 transitions. [2024-11-14 03:29:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:29:52,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:52,240 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:52,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Ended with exit code 0 [2024-11-14 03:29:52,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:52,443 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:29:52,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash -116021103, now seen corresponding path program 1 times [2024-11-14 03:29:52,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960360957] [2024-11-14 03:29:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:52,444 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 03:29:52,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:52,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:52,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:52,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:29:52,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:52,638 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 03:29:52,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:52,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:52,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960360957] [2024-11-14 03:29:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960360957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:52,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:52,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:29:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876523600] [2024-11-14 03:29:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:52,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:29:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:29:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:29:52,640 INFO L87 Difference]: Start difference. First operand 1945 states and 2461 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 03:29:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:52,751 INFO L93 Difference]: Finished difference Result 1915 states and 2403 transitions. [2024-11-14 03:29:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:29:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-14 03:29:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:52,758 INFO L225 Difference]: With dead ends: 1915 [2024-11-14 03:29:52,758 INFO L226 Difference]: Without dead ends: 1915 [2024-11-14 03:29:52,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 03:29:52,759 INFO L432 NwaCegarLoop]: 1458 mSDtfsCounter, 48 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 4348 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 03:29:52,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 4348 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:29:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2024-11-14 03:29:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1915. [2024-11-14 03:29:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1235 states have (on average 1.9311740890688258) internal successors, (2385), 1904 states have internal predecessors, (2385), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:29:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2403 transitions. [2024-11-14 03:29:52,792 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2403 transitions. Word has length 14 [2024-11-14 03:29:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:52,793 INFO L471 AbstractCegarLoop]: Abstraction has 1915 states and 2403 transitions. [2024-11-14 03:29:52,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 03:29:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2403 transitions. [2024-11-14 03:29:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:29:52,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:52,795 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] [2024-11-14 03:29:52,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:52,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:52,996 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:29:52,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash -81118465, now seen corresponding path program 1 times [2024-11-14 03:29:52,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:52,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934650942] [2024-11-14 03:29:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:52,997 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 03:29:52,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:52,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:53,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:53,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:29:53,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:53,208 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 03:29:53,315 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 03:29:53,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:53,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:53,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934650942] [2024-11-14 03:29:53,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934650942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:53,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:53,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:29:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644638865] [2024-11-14 03:29:53,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:53,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:29:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:29:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:29:53,319 INFO L87 Difference]: Start difference. First operand 1915 states and 2403 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 03:29:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:58,016 INFO L93 Difference]: Finished difference Result 1919 states and 2403 transitions. [2024-11-14 03:29:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:29:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-14 03:29:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:58,024 INFO L225 Difference]: With dead ends: 1919 [2024-11-14 03:29:58,024 INFO L226 Difference]: Without dead ends: 1919 [2024-11-14 03:29:58,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 03:29:58,027 INFO L432 NwaCegarLoop]: 911 mSDtfsCounter, 966 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:58,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1771 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-14 03:29:58,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2024-11-14 03:29:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1911. [2024-11-14 03:29:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1235 states have (on average 1.9246963562753037) internal successors, (2377), 1900 states have internal predecessors, (2377), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:29:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2395 transitions. [2024-11-14 03:29:58,065 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2395 transitions. Word has length 28 [2024-11-14 03:29:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:58,065 INFO L471 AbstractCegarLoop]: Abstraction has 1911 states and 2395 transitions. [2024-11-14 03:29:58,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 03:29:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2395 transitions. [2024-11-14 03:29:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:29:58,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:58,066 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] [2024-11-14 03:29:58,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Forceful destruction successful, exit code 0 [2024-11-14 03:29:58,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:58,267 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:29:58,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash -81118464, now seen corresponding path program 1 times [2024-11-14 03:29:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:58,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360841741] [2024-11-14 03:29:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:58,268 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 03:29:58,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:58,272 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:58,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:29:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:58,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:29:58,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:58,524 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 03:29:58,787 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 03:29:58,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:58,789 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:58,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360841741] [2024-11-14 03:29:58,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360841741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:58,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:58,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:29:58,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800206020] [2024-11-14 03:29:58,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:58,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:29:58,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:58,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:29:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:29:58,791 INFO L87 Difference]: Start difference. First operand 1911 states and 2395 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 03:30:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:04,742 INFO L93 Difference]: Finished difference Result 2068 states and 2415 transitions. [2024-11-14 03:30:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:30:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-14 03:30:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:04,751 INFO L225 Difference]: With dead ends: 2068 [2024-11-14 03:30:04,751 INFO L226 Difference]: Without dead ends: 2068 [2024-11-14 03:30:04,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 03:30:04,752 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 455 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:04,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 3095 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-14 03:30:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2024-11-14 03:30:04,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1907. [2024-11-14 03:30:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1235 states have (on average 1.9182186234817813) internal successors, (2369), 1896 states have internal predecessors, (2369), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:30:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2387 transitions. [2024-11-14 03:30:04,788 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2387 transitions. Word has length 28 [2024-11-14 03:30:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:04,789 INFO L471 AbstractCegarLoop]: Abstraction has 1907 states and 2387 transitions. [2024-11-14 03:30:04,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 03:30:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2387 transitions. [2024-11-14 03:30:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 03:30:04,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:04,790 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] [2024-11-14 03:30:04,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Ended with exit code 0 [2024-11-14 03:30:04,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:04,991 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 03:30:04,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1414083712, now seen corresponding path program 1 times [2024-11-14 03:30:04,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:04,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934484868] [2024-11-14 03:30:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:04,992 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 03:30:04,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:04,994 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:04,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:05,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:30:05,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:05,359 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 03:30:05,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:05,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934484868] [2024-11-14 03:30:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934484868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:05,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:05,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:30:05,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716373480] [2024-11-14 03:30:05,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:05,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:30:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:30:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:30:05,361 INFO L87 Difference]: Start difference. First operand 1907 states and 2387 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 03:30:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:05,472 INFO L93 Difference]: Finished difference Result 1895 states and 2367 transitions. [2024-11-14 03:30:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:30:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2024-11-14 03:30:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:05,480 INFO L225 Difference]: With dead ends: 1895 [2024-11-14 03:30:05,480 INFO L226 Difference]: Without dead ends: 1895 [2024-11-14 03:30:05,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 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 03:30:05,481 INFO L432 NwaCegarLoop]: 1452 mSDtfsCounter, 21 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4325 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 03:30:05,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4325 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:30:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2024-11-14 03:30:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1895. [2024-11-14 03:30:05,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1223 states have (on average 1.9206868356500408) internal successors, (2349), 1884 states have internal predecessors, (2349), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:30:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2367 transitions. [2024-11-14 03:30:05,513 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2367 transitions. Word has length 47 [2024-11-14 03:30:05,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:05,514 INFO L471 AbstractCegarLoop]: Abstraction has 1895 states and 2367 transitions. [2024-11-14 03:30:05,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 03:30:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2367 transitions. [2024-11-14 03:30:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 03:30:05,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:05,516 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] [2024-11-14 03:30:05,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:05,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:05,717 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:30:05,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2076490828, now seen corresponding path program 1 times [2024-11-14 03:30:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:05,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289904388] [2024-11-14 03:30:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:05,719 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 03:30:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:05,722 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:05,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:06,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:30:06,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:06,198 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 03:30:06,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:30:07,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:07,024 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 03:30:07,053 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:30:07,054 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 03:30:07,086 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 03:30:07,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:07,086 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289904388] [2024-11-14 03:30:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289904388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:30:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121553686] [2024-11-14 03:30:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:07,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:30:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:30:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:30:07,087 INFO L87 Difference]: Start difference. First operand 1895 states and 2367 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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 03:30:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:11,022 INFO L93 Difference]: Finished difference Result 1811 states and 2242 transitions. [2024-11-14 03:30:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:30:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-14 03:30:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:11,029 INFO L225 Difference]: With dead ends: 1811 [2024-11-14 03:30:11,029 INFO L226 Difference]: Without dead ends: 1811 [2024-11-14 03:30:11,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 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 03:30:11,030 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 1764 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:11,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 938 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-14 03:30:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-11-14 03:30:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1634. [2024-11-14 03:30:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1046 states have (on average 1.8107074569789674) internal successors, (1894), 1623 states have internal predecessors, (1894), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:30:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 1912 transitions. [2024-11-14 03:30:11,052 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 1912 transitions. Word has length 55 [2024-11-14 03:30:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:11,053 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 1912 transitions. [2024-11-14 03:30:11,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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 03:30:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 1912 transitions. [2024-11-14 03:30:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 03:30:11,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:11,054 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] [2024-11-14 03:30:11,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Ended with exit code 0 [2024-11-14 03:30:11,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:11,255 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:30:11,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2102122742, now seen corresponding path program 1 times [2024-11-14 03:30:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905675903] [2024-11-14 03:30:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:11,257 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 03:30:11,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:11,259 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:11,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:11,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:30:11,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:11,590 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 03:30:11,615 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 03:30:11,663 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 03:30:11,685 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 03:30:11,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:11,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905675903] [2024-11-14 03:30:11,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905675903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:11,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:11,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:30:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333342621] [2024-11-14 03:30:11,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:11,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:30:11,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:30:11,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:30:11,687 INFO L87 Difference]: Start difference. First operand 1634 states and 1912 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:16,711 INFO L93 Difference]: Finished difference Result 1633 states and 1910 transitions. [2024-11-14 03:30:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:30:16,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-14 03:30:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:16,719 INFO L225 Difference]: With dead ends: 1633 [2024-11-14 03:30:16,719 INFO L226 Difference]: Without dead ends: 1633 [2024-11-14 03:30:16,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 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 03:30:16,720 INFO L432 NwaCegarLoop]: 1379 mSDtfsCounter, 2 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:16,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3454 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-14 03:30:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2024-11-14 03:30:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1633. [2024-11-14 03:30:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1046 states have (on average 1.808795411089866) internal successors, (1892), 1622 states have internal predecessors, (1892), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:30:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 1910 transitions. [2024-11-14 03:30:16,745 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 1910 transitions. Word has length 60 [2024-11-14 03:30:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:16,745 INFO L471 AbstractCegarLoop]: Abstraction has 1633 states and 1910 transitions. [2024-11-14 03:30:16,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 1910 transitions. [2024-11-14 03:30:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 03:30:16,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:16,747 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] [2024-11-14 03:30:16,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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)] Ended with exit code 0 [2024-11-14 03:30:16,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:16,947 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:30:16,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2102122743, now seen corresponding path program 1 times [2024-11-14 03:30:16,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:16,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987605844] [2024-11-14 03:30:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:16,949 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 03:30:16,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:16,951 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:16,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:17,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:30:17,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:17,264 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 03:30:17,296 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 03:30:17,303 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 03:30:17,389 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 03:30:17,416 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 03:30:17,416 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:17,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:17,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987605844] [2024-11-14 03:30:17,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987605844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:17,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:17,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:30:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792494615] [2024-11-14 03:30:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:17,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:30:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:30:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:30:17,418 INFO L87 Difference]: Start difference. First operand 1633 states and 1910 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:24,133 INFO L93 Difference]: Finished difference Result 1632 states and 1908 transitions. [2024-11-14 03:30:24,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:30:24,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-14 03:30:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:24,139 INFO L225 Difference]: With dead ends: 1632 [2024-11-14 03:30:24,139 INFO L226 Difference]: Without dead ends: 1632 [2024-11-14 03:30:24,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 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 03:30:24,140 INFO L432 NwaCegarLoop]: 1379 mSDtfsCounter, 1 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:24,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3497 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-14 03:30:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-11-14 03:30:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2024-11-14 03:30:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1044 states have (on average 1.8103448275862069) internal successors, (1890), 1621 states have internal predecessors, (1890), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:30:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 1908 transitions. [2024-11-14 03:30:24,179 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 1908 transitions. Word has length 60 [2024-11-14 03:30:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:24,180 INFO L471 AbstractCegarLoop]: Abstraction has 1632 states and 1908 transitions. [2024-11-14 03:30:24,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 1908 transitions. [2024-11-14 03:30:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 03:30:24,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:24,181 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 03:30:24,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:24,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:24,382 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 03:30:24,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash 455561597, now seen corresponding path program 1 times [2024-11-14 03:30:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:24,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009773907] [2024-11-14 03:30:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:24,383 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 03:30:24,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:24,385 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:24,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:24,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:30:24,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:24,786 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 03:30:24,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:24,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009773907] [2024-11-14 03:30:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009773907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:30:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227155658] [2024-11-14 03:30:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:24,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:30:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:30:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:30:24,792 INFO L87 Difference]: Start difference. First operand 1632 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 03:30:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:24,868 INFO L93 Difference]: Finished difference Result 1635 states and 1914 transitions. [2024-11-14 03:30:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:30:24,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2024-11-14 03:30:24,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:24,877 INFO L225 Difference]: With dead ends: 1635 [2024-11-14 03:30:24,880 INFO L226 Difference]: Without dead ends: 1635 [2024-11-14 03:30:24,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 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 03:30:24,881 INFO L432 NwaCegarLoop]: 1378 mSDtfsCounter, 0 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:24,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4126 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:30:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2024-11-14 03:30:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2024-11-14 03:30:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1046 states have (on average 1.8097514340344167) internal successors, (1893), 1624 states have internal predecessors, (1893), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:30:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1914 transitions. [2024-11-14 03:30:24,916 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1914 transitions. Word has length 68 [2024-11-14 03:30:24,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:24,916 INFO L471 AbstractCegarLoop]: Abstraction has 1635 states and 1914 transitions. [2024-11-14 03:30:24,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 03:30:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1914 transitions. [2024-11-14 03:30:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 03:30:24,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:24,918 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, 1] [2024-11-14 03:30:24,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:25,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:25,119 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 03:30:25,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1641322670, now seen corresponding path program 1 times [2024-11-14 03:30:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440381293] [2024-11-14 03:30:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:25,120 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 03:30:25,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:25,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:25,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 (17)] Waiting until timeout for monitored process [2024-11-14 03:30:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:25,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:30:25,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:25,569 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 03:30:25,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:25,675 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 03:30:25,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:25,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440381293] [2024-11-14 03:30:25,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440381293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:25,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1627347778] [2024-11-14 03:30:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:25,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:30:25,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:30:25,679 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:30:25,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-14 03:30:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:26,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:30:26,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:26,339 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 03:30:26,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:26,390 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 03:30:26,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1627347778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:26,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205181308] [2024-11-14 03:30:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:26,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:30:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:30:26,394 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:30:26,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 03:30:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:26,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:30:26,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:26,767 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 03:30:26,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:26,812 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 03:30:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205181308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:26,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:30:26,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-14 03:30:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65224290] [2024-11-14 03:30:26,813 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:30:26,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:30:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:30:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:30:26,815 INFO L87 Difference]: Start difference. First operand 1635 states and 1914 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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 03:30:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:27,124 INFO L93 Difference]: Finished difference Result 1647 states and 1933 transitions. [2024-11-14 03:30:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:30:27,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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 69 [2024-11-14 03:30:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:27,131 INFO L225 Difference]: With dead ends: 1647 [2024-11-14 03:30:27,135 INFO L226 Difference]: Without dead ends: 1647 [2024-11-14 03:30:27,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 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 03:30:27,136 INFO L432 NwaCegarLoop]: 1377 mSDtfsCounter, 8 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:27,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4127 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:30:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2024-11-14 03:30:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2024-11-14 03:30:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1055 states have (on average 1.8085308056872038) internal successors, (1908), 1633 states have internal predecessors, (1908), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:30:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 1929 transitions. [2024-11-14 03:30:27,186 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 1929 transitions. Word has length 69 [2024-11-14 03:30:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:27,187 INFO L471 AbstractCegarLoop]: Abstraction has 1645 states and 1929 transitions. [2024-11-14 03:30:27,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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 03:30:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 1929 transitions. [2024-11-14 03:30:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-14 03:30:27,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:27,194 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, 1] [2024-11-14 03:30:27,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 03:30:27,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 (17)] Ended with exit code 0 [2024-11-14 03:30:27,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-14 03:30:27,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:30:27,799 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:30:27,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2615875, now seen corresponding path program 2 times [2024-11-14 03:30:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328085288] [2024-11-14 03:30:27,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:30:27,801 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 03:30:27,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:27,803 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:27,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 (20)] Waiting until timeout for monitored process [2024-11-14 03:30:28,280 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:30:28,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:30:28,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:30:28,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:28,406 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 03:30:28,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:28,657 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 03:30:28,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328085288] [2024-11-14 03:30:28,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328085288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1645795305] [2024-11-14 03:30:28,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:30:28,658 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:30:28,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:30:28,660 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:30:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-14 03:30:30,150 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:30:30,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:30:30,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:30:30,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:30,242 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 03:30:30,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:30,344 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 03:30:30,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1645795305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:30,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361266426] [2024-11-14 03:30:30,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:30:30,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:30:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:30:30,347 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:30:30,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 03:30:43,837 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:30:43,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:30:43,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:30:43,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:43,910 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 03:30:43,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:44,001 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 03:30:44,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361266426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:44,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:30:44,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 03:30:44,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640198684] [2024-11-14 03:30:44,002 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:30:44,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:30:44,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:44,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:30:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-14 03:30:44,005 INFO L87 Difference]: Start difference. First operand 1645 states and 1929 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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 03:30:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:44,813 INFO L93 Difference]: Finished difference Result 1660 states and 1950 transitions. [2024-11-14 03:30:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:30:44,814 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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 72 [2024-11-14 03:30:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:44,821 INFO L225 Difference]: With dead ends: 1660 [2024-11-14 03:30:44,821 INFO L226 Difference]: Without dead ends: 1654 [2024-11-14 03:30:44,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=357, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:30:44,823 INFO L432 NwaCegarLoop]: 1378 mSDtfsCounter, 10 mSDsluCounter, 8239 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9617 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:44,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9617 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:30:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2024-11-14 03:30:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1654. [2024-11-14 03:30:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1064 states have (on average 1.8035714285714286) internal successors, (1919), 1642 states have internal predecessors, (1919), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:30:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 1940 transitions. [2024-11-14 03:30:44,857 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 1940 transitions. Word has length 72 [2024-11-14 03:30:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:44,857 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 1940 transitions. [2024-11-14 03:30:44,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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 03:30:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 1940 transitions. [2024-11-14 03:30:44,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 03:30:44,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:44,859 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, 1] [2024-11-14 03:30:44,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-14 03:30:45,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 03:30:45,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 (20)] Ended with exit code 0 [2024-11-14 03:30:45,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:45,460 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2024-11-14 03:30:45,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:45,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1946320867, now seen corresponding path program 3 times [2024-11-14 03:30:45,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:45,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831924947] [2024-11-14 03:30:45,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:30:45,461 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 03:30:45,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:45,463 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 03:30:45,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/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 (23)] Waiting until timeout for monitored process [2024-11-14 03:30:46,155 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 03:30:46,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:30:46,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 03:30:46,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:46,360 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 03:30:46,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:47,234 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 03:30:47,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:47,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831924947] [2024-11-14 03:30:47,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831924947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:47,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [369552619] [2024-11-14 03:30:47,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:30:47,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:30:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:30:47,238 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:30:47,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-14 03:30:51,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 03:30:51,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:30:51,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 03:30:51,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:51,244 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 03:30:51,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:30:51,417 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 03:30:51,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [369552619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:30:51,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140490013] [2024-11-14 03:30:51,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:30:51,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:30:51,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:30:51,419 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:30:51,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d184d70-a793-4207-a535-29ff49696809/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process