./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:26:51,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:26:51,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-13 23:26:51,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:26:51,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:26:51,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:26:51,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:26:51,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:26:51,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:26:51,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:26:51,227 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:26:51,227 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:26:51,227 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:26:51,227 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:26:51,227 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:26:51,227 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:26:51,227 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:26:51,228 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:26:51,228 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:26:51,228 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:26:51,228 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:26:51,228 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:26:51,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 23:26:51,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 23:26:51,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:26:51,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:26:51,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:26:51,230 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:26:51,231 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 23:26:51,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:26:51,231 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:26:51,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:26:51,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:26:51,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:26:51,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:26:51,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:26:51,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:26:51,232 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:26:51,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:26:51,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:26:51,232 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:26:51,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:26:51,232 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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2024-11-13 23:26:51,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:26:51,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:26:51,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:26:51,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:26:51,576 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:26:51,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i Unable to find full path for "g++" [2024-11-13 23:26:53,454 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:26:53,769 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:26:53,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-13 23:26:53,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data/72ef7b777/9b33526decb54293a27da0a5c3dc938e/FLAGf41f4b8e7 [2024-11-13 23:26:53,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data/72ef7b777/9b33526decb54293a27da0a5c3dc938e [2024-11-13 23:26:53,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:26:53,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:26:53,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:26:53,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:26:53,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:26:53,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:26:53" (1/1) ... [2024-11-13 23:26:53,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bcb356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:26:53, skipping insertion in model container [2024-11-13 23:26:53,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:26:53" (1/1) ... [2024-11-13 23:26:53,885 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:26:54,305 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:26:54,305 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:26:54,306 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:26:54,306 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:26:54,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:26:54,379 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) [2024-11-13 23:26:54,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@88cad62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:26:54, skipping insertion in model container [2024-11-13 23:26:54,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:26:54,381 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 23:26:54,383 INFO L158 Benchmark]: Toolchain (without parser) took 565.59ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 74.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 23:26:54,383 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:26:54,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.08ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 74.3MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 23:26:54,385 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.08ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 74.3MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:26:56,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:26:57,006 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-13 23:26:57,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:26:57,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:26:57,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:26:57,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:26:57,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:26:57,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:26:57,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:26:57,073 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:26:57,073 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:26:57,073 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:26:57,073 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:26:57,073 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:26:57,073 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:26:57,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 23:26:57,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 23:26:57,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:26:57,076 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:26:57,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:26:57,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:26:57,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:26:57,076 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:26:57,077 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:26:57,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:26:57,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 23:26:57,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:26:57,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:26:57,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:26:57,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:26:57,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:26:57,079 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-13 23:26:57,079 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 23:26:57,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:26:57,079 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:26:57,080 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_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2024-11-13 23:26:57,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:26:57,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:26:57,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:26:57,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:26:57,393 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:26:57,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i Unable to find full path for "g++" [2024-11-13 23:26:59,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:26:59,662 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:26:59,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-13 23:26:59,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data/bf7cefde8/922462601c074b1bb72453458c82f409/FLAG0a3f5a25b [2024-11-13 23:26:59,718 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/data/bf7cefde8/922462601c074b1bb72453458c82f409 [2024-11-13 23:26:59,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:26:59,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:26:59,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:26:59,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:26:59,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:26:59,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:26:59" (1/1) ... [2024-11-13 23:26:59,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a84cc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:26:59, skipping insertion in model container [2024-11-13 23:26:59,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:26:59" (1/1) ... [2024-11-13 23:26:59,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:27:00,277 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,277 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,278 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,278 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:27:00,365 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 23:27:00,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:27:00,421 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,421 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,422 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,422 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:27:00,464 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:27:00,507 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,508 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,508 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,509 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 23:27:00,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:27:00,601 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:27:00,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00 WrapperNode [2024-11-13 23:27:00,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:27:00,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:27:00,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:27:00,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:27:00,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,685 INFO L138 Inliner]: procedures = 278, calls = 128, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 217 [2024-11-13 23:27:00,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:27:00,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:27:00,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:27:00,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:27:00,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:27:00,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:27:00,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:27:00,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:27:00,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (1/1) ... [2024-11-13 23:27:00,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:27:00,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:00,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:27:00,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:27:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-13 23:27:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-13 23:27:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-13 23:27:00,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 23:27:00,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-13 23:27:00,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 23:27:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2024-11-13 23:27:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-13 23:27:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 23:27:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 23:27:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 23:27:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:27:00,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 23:27:00,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:27:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:27:00,831 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 23:27:01,055 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:27:01,058 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:27:02,154 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 23:27:02,154 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:27:04,971 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:27:04,971 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 23:27:04,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:27:04 BoogieIcfgContainer [2024-11-13 23:27:04,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:27:04,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:27:04,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:27:04,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:27:04,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:26:59" (1/3) ... [2024-11-13 23:27:04,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eefb213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:27:04, skipping insertion in model container [2024-11-13 23:27:04,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:00" (2/3) ... [2024-11-13 23:27:04,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eefb213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:27:04, skipping insertion in model container [2024-11-13 23:27:04,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:27:04" (3/3) ... [2024-11-13 23:27:04,982 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2024-11-13 23:27:04,997 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:27:04,998 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_22-nocollapse.i that has 2 procedures, 60 locations, 1 initial locations, 4 loop locations, and 29 error locations. [2024-11-13 23:27:04,998 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 23:27:05,085 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 23:27:05,114 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 85 transitions, 178 flow [2024-11-13 23:27:05,281 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1673 states, 1492 states have (on average 3.133378016085791) internal successors, (4675), 1672 states have internal predecessors, (4675), 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) [2024-11-13 23:27:05,311 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:27:05,326 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;@10ed5dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:27:05,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-13 23:27:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 1673 states, 1492 states have (on average 3.133378016085791) internal successors, (4675), 1672 states have internal predecessors, (4675), 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) [2024-11-13 23:27:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 23:27:05,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:05,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 23:27:05,341 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:05,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash 591139, now seen corresponding path program 1 times [2024-11-13 23:27:05,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:05,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848310712] [2024-11-13 23:27:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:05,363 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 [2024-11-13 23:27:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:05,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:05,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:05,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:27:05,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:05,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:05,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:05,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848310712] [2024-11-13 23:27:05,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848310712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:05,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:05,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:27:05,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122222422] [2024-11-13 23:27:05,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:05,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:05,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:05,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:05,739 INFO L87 Difference]: Start difference. First operand has 1673 states, 1492 states have (on average 3.133378016085791) internal successors, (4675), 1672 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:06,270 INFO L93 Difference]: Finished difference Result 1673 states and 4675 transitions. [2024-11-13 23:27:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:27:06,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 23:27:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:06,314 INFO L225 Difference]: With dead ends: 1673 [2024-11-13 23:27:06,314 INFO L226 Difference]: Without dead ends: 1513 [2024-11-13 23:27:06,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:27:06,322 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:06,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 34 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:27:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2024-11-13 23:27:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1513. [2024-11-13 23:27:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1368 states have (on average 3.0935672514619883) internal successors, (4232), 1512 states have internal predecessors, (4232), 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) [2024-11-13 23:27:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 4232 transitions. [2024-11-13 23:27:06,516 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 4232 transitions. Word has length 3 [2024-11-13 23:27:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:06,517 INFO L471 AbstractCegarLoop]: Abstraction has 1513 states and 4232 transitions. [2024-11-13 23:27:06,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 4232 transitions. [2024-11-13 23:27:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 23:27:06,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:06,518 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 23:27:06,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:06,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:06,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:06,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:06,724 INFO L85 PathProgramCache]: Analyzing trace with hash 591140, now seen corresponding path program 1 times [2024-11-13 23:27:06,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:06,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923163071] [2024-11-13 23:27:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:06,726 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 [2024-11-13 23:27:06,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:06,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:06,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:06,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:27:06,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:06,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:06,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923163071] [2024-11-13 23:27:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923163071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:06,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:06,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:27:06,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236614534] [2024-11-13 23:27:06,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:06,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:06,994 INFO L87 Difference]: Start difference. First operand 1513 states and 4232 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:07,656 INFO L93 Difference]: Finished difference Result 3001 states and 8439 transitions. [2024-11-13 23:27:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:27:07,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 23:27:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:07,672 INFO L225 Difference]: With dead ends: 3001 [2024-11-13 23:27:07,672 INFO L226 Difference]: Without dead ends: 1517 [2024-11-13 23:27:07,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:27:07,678 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:07,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 81 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:27:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-11-13 23:27:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1516. [2024-11-13 23:27:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1371 states have (on average 3.088986141502553) internal successors, (4235), 1515 states have internal predecessors, (4235), 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) [2024-11-13 23:27:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4235 transitions. [2024-11-13 23:27:07,756 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4235 transitions. Word has length 3 [2024-11-13 23:27:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:07,757 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 4235 transitions. [2024-11-13 23:27:07,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:07,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4235 transitions. [2024-11-13 23:27:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 23:27:07,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:07,757 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 23:27:07,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:07,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:07,961 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:07,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:07,962 INFO L85 PathProgramCache]: Analyzing trace with hash 431287631, now seen corresponding path program 1 times [2024-11-13 23:27:07,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:07,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239618546] [2024-11-13 23:27:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:07,963 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 [2024-11-13 23:27:07,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:07,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:07,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:08,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:08,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:08,217 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 [2024-11-13 23:27:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:08,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:08,227 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:08,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239618546] [2024-11-13 23:27:08,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239618546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:08,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:08,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:27:08,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200430677] [2024-11-13 23:27:08,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:08,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:27:08,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:27:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:27:08,231 INFO L87 Difference]: Start difference. First operand 1516 states and 4235 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) [2024-11-13 23:27:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:08,543 INFO L93 Difference]: Finished difference Result 1516 states and 4235 transitions. [2024-11-13 23:27:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:27:08,544 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 [2024-11-13 23:27:08,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:08,557 INFO L225 Difference]: With dead ends: 1516 [2024-11-13 23:27:08,558 INFO L226 Difference]: Without dead ends: 1515 [2024-11-13 23:27:08,559 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 [2024-11-13 23:27:08,559 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:08,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:27:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2024-11-13 23:27:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2024-11-13 23:27:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1371 states have (on average 3.088256746900073) internal successors, (4234), 1514 states have internal predecessors, (4234), 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) [2024-11-13 23:27:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 4234 transitions. [2024-11-13 23:27:08,626 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 4234 transitions. Word has length 6 [2024-11-13 23:27:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:08,626 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 4234 transitions. [2024-11-13 23:27:08,627 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) [2024-11-13 23:27:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 4234 transitions. [2024-11-13 23:27:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 23:27:08,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:08,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 23:27:08,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-13 23:27:08,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:08,828 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:08,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash 431287632, now seen corresponding path program 1 times [2024-11-13 23:27:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:08,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278846693] [2024-11-13 23:27:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:08,829 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 [2024-11-13 23:27:08,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:08,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:08,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:09,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 23:27:09,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:09,055 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 [2024-11-13 23:27:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:09,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:09,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:09,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278846693] [2024-11-13 23:27:09,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278846693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:09,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:27:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370147617] [2024-11-13 23:27:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:09,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:27:09,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:09,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:27:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:27:09,069 INFO L87 Difference]: Start difference. First operand 1515 states and 4234 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) [2024-11-13 23:27:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:09,427 INFO L93 Difference]: Finished difference Result 1515 states and 4234 transitions. [2024-11-13 23:27:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:27:09,428 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 [2024-11-13 23:27:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:09,444 INFO L225 Difference]: With dead ends: 1515 [2024-11-13 23:27:09,444 INFO L226 Difference]: Without dead ends: 1514 [2024-11-13 23:27:09,445 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 [2024-11-13 23:27:09,448 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:09,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 57 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:27:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2024-11-13 23:27:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2024-11-13 23:27:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1371 states have (on average 3.087527352297593) internal successors, (4233), 1513 states have internal predecessors, (4233), 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) [2024-11-13 23:27:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4233 transitions. [2024-11-13 23:27:09,523 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4233 transitions. Word has length 6 [2024-11-13 23:27:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:09,523 INFO L471 AbstractCegarLoop]: Abstraction has 1514 states and 4233 transitions. [2024-11-13 23:27:09,523 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) [2024-11-13 23:27:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4233 transitions. [2024-11-13 23:27:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 23:27:09,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:09,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:09,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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)] Forceful destruction successful, exit code 0 [2024-11-13 23:27:09,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:09,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:09,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash 485015270, now seen corresponding path program 1 times [2024-11-13 23:27:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:09,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872370879] [2024-11-13 23:27:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:09,730 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 [2024-11-13 23:27:09,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:09,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:09,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:09,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:27:09,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:09,978 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 [2024-11-13 23:27:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:09,996 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:09,996 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872370879] [2024-11-13 23:27:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872370879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:09,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:27:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208336326] [2024-11-13 23:27:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:09,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:09,998 INFO L87 Difference]: Start difference. First operand 1514 states and 4233 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:10,398 INFO L93 Difference]: Finished difference Result 1514 states and 4233 transitions. [2024-11-13 23:27:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:10,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 23:27:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:10,411 INFO L225 Difference]: With dead ends: 1514 [2024-11-13 23:27:10,411 INFO L226 Difference]: Without dead ends: 1512 [2024-11-13 23:27:10,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:27:10,413 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:10,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:27:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2024-11-13 23:27:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1512. [2024-11-13 23:27:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1371 states have (on average 3.086068563092633) internal successors, (4231), 1511 states have internal predecessors, (4231), 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) [2024-11-13 23:27:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 4231 transitions. [2024-11-13 23:27:10,525 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 4231 transitions. Word has length 7 [2024-11-13 23:27:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:10,526 INFO L471 AbstractCegarLoop]: Abstraction has 1512 states and 4231 transitions. [2024-11-13 23:27:10,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 4231 transitions. [2024-11-13 23:27:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 23:27:10,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:10,526 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:10,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:10,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:10,731 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:10,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash 485015271, now seen corresponding path program 1 times [2024-11-13 23:27:10,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:10,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911797762] [2024-11-13 23:27:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:10,733 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 [2024-11-13 23:27:10,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:10,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:10,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:10,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 23:27:10,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:10,940 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 [2024-11-13 23:27:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:10,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:10,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:10,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911797762] [2024-11-13 23:27:10,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911797762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:10,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:10,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:27:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227766815] [2024-11-13 23:27:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:10,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:10,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:10,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:10,984 INFO L87 Difference]: Start difference. First operand 1512 states and 4231 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:11,437 INFO L93 Difference]: Finished difference Result 1512 states and 4231 transitions. [2024-11-13 23:27:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:27:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 23:27:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:11,452 INFO L225 Difference]: With dead ends: 1512 [2024-11-13 23:27:11,452 INFO L226 Difference]: Without dead ends: 1510 [2024-11-13 23:27:11,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:27:11,453 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:11,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 73 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:27:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2024-11-13 23:27:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1510. [2024-11-13 23:27:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1371 states have (on average 3.0846097738876734) internal successors, (4229), 1509 states have internal predecessors, (4229), 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) [2024-11-13 23:27:11,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 4229 transitions. [2024-11-13 23:27:11,525 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 4229 transitions. Word has length 7 [2024-11-13 23:27:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:11,525 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 4229 transitions. [2024-11-13 23:27:11,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 4229 transitions. [2024-11-13 23:27:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 23:27:11,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:11,526 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 23:27:11,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:11,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:11,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:11,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 485016007, now seen corresponding path program 1 times [2024-11-13 23:27:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466948029] [2024-11-13 23:27:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:11,729 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 [2024-11-13 23:27:11,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:11,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:11,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:11,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:27:11,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:11,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:11,904 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466948029] [2024-11-13 23:27:11,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466948029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:11,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:11,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:27:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910731812] [2024-11-13 23:27:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:11,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:27:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:27:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:27:11,905 INFO L87 Difference]: Start difference. First operand 1510 states and 4229 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:12,188 INFO L93 Difference]: Finished difference Result 3035 states and 8474 transitions. [2024-11-13 23:27:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:27:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 23:27:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:12,203 INFO L225 Difference]: With dead ends: 3035 [2024-11-13 23:27:12,203 INFO L226 Difference]: Without dead ends: 1529 [2024-11-13 23:27:12,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:27:12,207 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 18 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:12,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 76 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:27:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2024-11-13 23:27:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1511. [2024-11-13 23:27:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1372 states have (on average 3.0830903790087465) internal successors, (4230), 1510 states have internal predecessors, (4230), 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) [2024-11-13 23:27:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4230 transitions. [2024-11-13 23:27:12,280 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4230 transitions. Word has length 7 [2024-11-13 23:27:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:12,280 INFO L471 AbstractCegarLoop]: Abstraction has 1511 states and 4230 transitions. [2024-11-13 23:27:12,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4230 transitions. [2024-11-13 23:27:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 23:27:12,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:12,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:12,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:12,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:12,482 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:12,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:12,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2051744406, now seen corresponding path program 1 times [2024-11-13 23:27:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:12,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488246413] [2024-11-13 23:27:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:12,483 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 [2024-11-13 23:27:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:12,485 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:12,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:13,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:27:13,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:13,344 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 23:27:13,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 23:27:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:13,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:13,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:13,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488246413] [2024-11-13 23:27:13,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488246413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:13,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:13,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:27:13,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529893570] [2024-11-13 23:27:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:13,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:27:13,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:13,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:27:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:27:13,428 INFO L87 Difference]: Start difference. First operand 1511 states and 4230 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-13 23:27:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:13,852 INFO L93 Difference]: Finished difference Result 1511 states and 4230 transitions. [2024-11-13 23:27:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:13,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2024-11-13 23:27:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:13,867 INFO L225 Difference]: With dead ends: 1511 [2024-11-13 23:27:13,867 INFO L226 Difference]: Without dead ends: 1509 [2024-11-13 23:27:13,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:13,869 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:13,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 42 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:27:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-13 23:27:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-13 23:27:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1372 states have (on average 3.0816326530612246) internal successors, (4228), 1508 states have internal predecessors, (4228), 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) [2024-11-13 23:27:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4228 transitions. [2024-11-13 23:27:13,943 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4228 transitions. Word has length 9 [2024-11-13 23:27:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:13,943 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 4228 transitions. [2024-11-13 23:27:13,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-13 23:27:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4228 transitions. [2024-11-13 23:27:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 23:27:13,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:13,944 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:13,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:14,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:14,145 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:14,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2051744405, now seen corresponding path program 1 times [2024-11-13 23:27:14,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:14,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796347994] [2024-11-13 23:27:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:14,146 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 [2024-11-13 23:27:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:14,148 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:14,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:14,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 23:27:14,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:15,129 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 23:27:15,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-13 23:27:15,154 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 23:27:15,155 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 [2024-11-13 23:27:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:15,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:15,287 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:15,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796347994] [2024-11-13 23:27:15,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796347994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:15,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:15,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:27:15,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008748435] [2024-11-13 23:27:15,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:15,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:27:15,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:15,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:27:15,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:15,289 INFO L87 Difference]: Start difference. First operand 1509 states and 4228 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2024-11-13 23:27:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:15,911 INFO L93 Difference]: Finished difference Result 1527 states and 4247 transitions. [2024-11-13 23:27:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:15,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 [2024-11-13 23:27:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:15,925 INFO L225 Difference]: With dead ends: 1527 [2024-11-13 23:27:15,925 INFO L226 Difference]: Without dead ends: 1525 [2024-11-13 23:27:15,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:27:15,926 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:15,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:27:15,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2024-11-13 23:27:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1519. [2024-11-13 23:27:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1382 states have (on average 3.071635311143271) internal successors, (4245), 1518 states have internal predecessors, (4245), 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) [2024-11-13 23:27:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4245 transitions. [2024-11-13 23:27:15,985 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4245 transitions. Word has length 9 [2024-11-13 23:27:15,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:15,986 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 4245 transitions. [2024-11-13 23:27:15,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2024-11-13 23:27:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4245 transitions. [2024-11-13 23:27:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 23:27:15,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:15,986 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:15,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-13 23:27:16,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:16,187 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:16,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash 820433508, now seen corresponding path program 1 times [2024-11-13 23:27:16,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:16,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631233169] [2024-11-13 23:27:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:16,188 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 [2024-11-13 23:27:16,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:16,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:16,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:17,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 23:27:17,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:17,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:27:17,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-13 23:27:17,387 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 23:27:17,387 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 [2024-11-13 23:27:17,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-13 23:27:17,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-13 23:27:17,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2024-11-13 23:27:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:17,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:17,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:17,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631233169] [2024-11-13 23:27:17,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631233169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:17,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:17,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 23:27:17,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858180267] [2024-11-13 23:27:17,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:17,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:27:17,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:17,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:27:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:27:17,717 INFO L87 Difference]: Start difference. First operand 1519 states and 4245 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:19,147 INFO L93 Difference]: Finished difference Result 1543 states and 4275 transitions. [2024-11-13 23:27:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 23:27:19,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 23:27:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:19,158 INFO L225 Difference]: With dead ends: 1543 [2024-11-13 23:27:19,158 INFO L226 Difference]: Without dead ends: 1542 [2024-11-13 23:27:19,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-13 23:27:19,159 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 91 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:19,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 106 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 23:27:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-13 23:27:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1529. [2024-11-13 23:27:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1392 states have (on average 3.0589080459770117) internal successors, (4258), 1528 states have internal predecessors, (4258), 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) [2024-11-13 23:27:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 4258 transitions. [2024-11-13 23:27:19,201 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 4258 transitions. Word has length 10 [2024-11-13 23:27:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:19,201 INFO L471 AbstractCegarLoop]: Abstraction has 1529 states and 4258 transitions. [2024-11-13 23:27:19,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 4258 transitions. [2024-11-13 23:27:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 23:27:19,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:19,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:19,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:19,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:19,403 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:19,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash 820433509, now seen corresponding path program 1 times [2024-11-13 23:27:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:19,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970164965] [2024-11-13 23:27:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:19,404 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 [2024-11-13 23:27:19,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:19,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:19,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:20,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 23:27:20,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:20,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:27:20,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 23:27:20,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 23:27:20,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 23:27:20,855 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 23:27:20,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-13 23:27:20,880 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 23:27:20,880 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 [2024-11-13 23:27:20,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 23:27:20,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 23:27:21,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 23:27:21,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 23:27:21,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 23:27:21,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 23:27:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:21,229 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:21,229 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970164965] [2024-11-13 23:27:21,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970164965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:21,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:21,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 23:27:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142379276] [2024-11-13 23:27:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:21,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:27:21,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:27:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:27:21,230 INFO L87 Difference]: Start difference. First operand 1529 states and 4258 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:22,590 INFO L93 Difference]: Finished difference Result 1543 states and 4265 transitions. [2024-11-13 23:27:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 23:27:22,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 23:27:22,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:22,605 INFO L225 Difference]: With dead ends: 1543 [2024-11-13 23:27:22,605 INFO L226 Difference]: Without dead ends: 1542 [2024-11-13 23:27:22,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-13 23:27:22,606 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:22,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 85 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 23:27:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-13 23:27:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1529. [2024-11-13 23:27:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1392 states have (on average 3.0581896551724137) internal successors, (4257), 1528 states have internal predecessors, (4257), 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) [2024-11-13 23:27:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 4257 transitions. [2024-11-13 23:27:22,645 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 4257 transitions. Word has length 10 [2024-11-13 23:27:22,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:22,646 INFO L471 AbstractCegarLoop]: Abstraction has 1529 states and 4257 transitions. [2024-11-13 23:27:22,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 4257 transitions. [2024-11-13 23:27:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 23:27:22,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:22,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:22,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:22,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:22,847 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:22,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash -336364473, now seen corresponding path program 1 times [2024-11-13 23:27:22,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:22,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088894457] [2024-11-13 23:27:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:22,848 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 [2024-11-13 23:27:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:22,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:22,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:23,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 23:27:23,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:23,094 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 [2024-11-13 23:27:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:23,123 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:23,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:23,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088894457] [2024-11-13 23:27:23,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088894457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:23,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:23,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:27:23,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191877509] [2024-11-13 23:27:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:23,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:23,124 INFO L87 Difference]: Start difference. First operand 1529 states and 4257 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:23,454 INFO L93 Difference]: Finished difference Result 1529 states and 4257 transitions. [2024-11-13 23:27:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:27:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 23:27:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:23,466 INFO L225 Difference]: With dead ends: 1529 [2024-11-13 23:27:23,466 INFO L226 Difference]: Without dead ends: 1527 [2024-11-13 23:27:23,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:23,469 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:23,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 62 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:27:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2024-11-13 23:27:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1527. [2024-11-13 23:27:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1392 states have (on average 3.055316091954023) internal successors, (4253), 1526 states have internal predecessors, (4253), 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) [2024-11-13 23:27:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 4253 transitions. [2024-11-13 23:27:23,508 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 4253 transitions. Word has length 11 [2024-11-13 23:27:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:23,509 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 4253 transitions. [2024-11-13 23:27:23,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 4253 transitions. [2024-11-13 23:27:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 23:27:23,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:23,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:23,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:23,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:23,711 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:23,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash -336364472, now seen corresponding path program 1 times [2024-11-13 23:27:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:23,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023270115] [2024-11-13 23:27:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:23,712 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 [2024-11-13 23:27:23,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:23,713 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:23,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:23,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 23:27:23,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:23,928 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 [2024-11-13 23:27:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:23,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:23,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023270115] [2024-11-13 23:27:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023270115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:23,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:23,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:27:23,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214408102] [2024-11-13 23:27:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:23,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:23,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:23,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:23,974 INFO L87 Difference]: Start difference. First operand 1527 states and 4253 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:24,321 INFO L93 Difference]: Finished difference Result 1527 states and 4253 transitions. [2024-11-13 23:27:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:27:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 23:27:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:24,327 INFO L225 Difference]: With dead ends: 1527 [2024-11-13 23:27:24,327 INFO L226 Difference]: Without dead ends: 1525 [2024-11-13 23:27:24,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:24,328 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:24,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:27:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2024-11-13 23:27:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1525. [2024-11-13 23:27:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1392 states have (on average 3.0524425287356323) internal successors, (4249), 1524 states have internal predecessors, (4249), 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) [2024-11-13 23:27:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4249 transitions. [2024-11-13 23:27:24,364 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4249 transitions. Word has length 11 [2024-11-13 23:27:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:24,365 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 4249 transitions. [2024-11-13 23:27:24,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4249 transitions. [2024-11-13 23:27:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 23:27:24,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:24,366 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:24,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:24,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:24,566 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:24,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash -994945753, now seen corresponding path program 1 times [2024-11-13 23:27:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270671171] [2024-11-13 23:27:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:24,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 23:27:24,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:24,571 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:24,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:24,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:24,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:24,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:27:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:24,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270671171] [2024-11-13 23:27:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270671171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:27:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1277013820] [2024-11-13 23:27:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:24,908 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:27:24,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:27:24,910 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:27:24,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-13 23:27:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:25,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:25,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:25,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:27:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:25,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1277013820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:27:25,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68063333] [2024-11-13 23:27:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:25,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:25,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:25,438 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:27:25,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 23:27:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:25,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:25,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:25,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:27:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:25,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68063333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:27:25,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:27:25,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2024-11-13 23:27:25,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125007356] [2024-11-13 23:27:25,830 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:27:25,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:27:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:27:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:27:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:25,831 INFO L87 Difference]: Start difference. First operand 1525 states and 4249 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:26,188 INFO L93 Difference]: Finished difference Result 3086 states and 8539 transitions. [2024-11-13 23:27:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:27:26,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 23:27:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:26,198 INFO L225 Difference]: With dead ends: 3086 [2024-11-13 23:27:26,198 INFO L226 Difference]: Without dead ends: 1580 [2024-11-13 23:27:26,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:27:26,202 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:26,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 136 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:27:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2024-11-13 23:27:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1569. [2024-11-13 23:27:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1436 states have (on average 2.998607242339833) internal successors, (4306), 1568 states have internal predecessors, (4306), 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) [2024-11-13 23:27:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 4306 transitions. [2024-11-13 23:27:26,240 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 4306 transitions. Word has length 16 [2024-11-13 23:27:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:26,241 INFO L471 AbstractCegarLoop]: Abstraction has 1569 states and 4306 transitions. [2024-11-13 23:27:26,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:27:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4306 transitions. [2024-11-13 23:27:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 23:27:26,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:26,241 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:26,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-13 23:27:26,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 [2024-11-13 23:27:26,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 23:27:26,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:26,843 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:27:26,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash -881065212, now seen corresponding path program 1 times [2024-11-13 23:27:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:27:26,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628052211] [2024-11-13 23:27:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:26,844 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 [2024-11-13 23:27:26,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:27:26,845 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:27:26,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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)] Waiting until timeout for monitored process [2024-11-13 23:27:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:27,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 23:27:27,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:28,004 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 [2024-11-13 23:27:28,213 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 23 treesize of output 1 [2024-11-13 23:27:28,310 INFO L349 Elim1Store]: treesize reduction 86, result has 31.2 percent of original size [2024-11-13 23:27:28,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 59 [2024-11-13 23:27:28,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-13 23:27:28,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-13 23:27:28,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-13 23:27:28,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:27:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:28,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:27:28,863 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_709 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_709) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-13 23:27:29,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:27:29,033 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-13 23:27:29,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:27:29,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2024-11-13 23:27:29,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-13 23:27:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-13 23:27:30,890 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:27:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628052211] [2024-11-13 23:27:30,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628052211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:27:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1819038226] [2024-11-13 23:27:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:30,890 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 23:27:30,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-13 23:27:30,892 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 23:27:30,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-13 23:27:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:44,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 23:27:44,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:45,054 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 23:27:45,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 23:27:45,337 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 23 treesize of output 1 [2024-11-13 23:27:45,422 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-13 23:27:45,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2024-11-13 23:27:45,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-13 23:27:45,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-13 23:27:45,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-13 23:27:45,773 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 19 treesize of output 11 [2024-11-13 23:27:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:45,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:27:45,930 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_709 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_809 (_ BitVec 1)) (|v_ULTIMATE.start_new_~p~0#1.base_50| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_50|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_50| v_ArrVal_809) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_new_~p~0#1.base_50| v_ArrVal_709) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))))))) is different from false [2024-11-13 23:27:45,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:27:45,953 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-13 23:27:45,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:27:45,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2024-11-13 23:27:45,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-13 23:27:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1819038226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:27:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097742653] [2024-11-13 23:27:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:53,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:53,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:53,698 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:27:53,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 23:27:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:54,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 23:27:54,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:58,677 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 23 treesize of output 1 [2024-11-13 23:27:58,854 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-13 23:27:58,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2024-11-13 23:27:58,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-13 23:27:59,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-13 23:27:59,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-13 23:27:59,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 23:27:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:27:59,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:27:59,669 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_914 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_914) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-13 23:28:01,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:01,966 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-13 23:28:01,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:01,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2024-11-13 23:28:01,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-13 23:28:12,449 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2024-11-13 23:28:12,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 272 [2024-11-13 23:28:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-13 23:28:12,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097742653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:28:12,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-13 23:28:12,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 8, 11, 11] total 41 [2024-11-13 23:28:12,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665762395] [2024-11-13 23:28:12,979 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-13 23:28:12,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 23:28:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:28:12,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 23:28:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1290, Unknown=18, NotChecked=228, Total=1722 [2024-11-13 23:28:12,981 INFO L87 Difference]: Start difference. First operand 1569 states and 4306 transitions. Second operand has 42 states, 41 states have (on average 2.024390243902439) internal successors, (83), 42 states have internal predecessors, (83), 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) [2024-11-13 23:28:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:28:16,526 INFO L93 Difference]: Finished difference Result 1572 states and 4306 transitions. [2024-11-13 23:28:16,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 23:28:16,528 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.024390243902439) internal successors, (83), 42 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 23:28:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:28:16,537 INFO L225 Difference]: With dead ends: 1572 [2024-11-13 23:28:16,537 INFO L226 Difference]: Without dead ends: 1571 [2024-11-13 23:28:16,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=299, Invalid=1675, Unknown=18, NotChecked=264, Total=2256 [2024-11-13 23:28:16,539 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 148 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:28:16,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 178 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 915 Invalid, 0 Unknown, 230 Unchecked, 2.9s Time] [2024-11-13 23:28:16,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-11-13 23:28:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1568. [2024-11-13 23:28:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1436 states have (on average 2.9944289693593316) internal successors, (4300), 1567 states have internal predecessors, (4300), 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) [2024-11-13 23:28:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 4300 transitions. [2024-11-13 23:28:16,579 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 4300 transitions. Word has length 19 [2024-11-13 23:28:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:28:16,581 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 4300 transitions. [2024-11-13 23:28:16,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.024390243902439) internal successors, (83), 42 states have internal predecessors, (83), 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) [2024-11-13 23:28:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4300 transitions. [2024-11-13 23:28:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 23:28:16,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:28:16,582 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:28:16,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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)] Ended with exit code 0 [2024-11-13 23:28:16,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:17,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2024-11-13 23:28:17,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-13 23:28:17,183 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-13 23:28:17,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:28:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash -881065211, now seen corresponding path program 1 times [2024-11-13 23:28:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:28:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620635862] [2024-11-13 23:28:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:28:17,184 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 [2024-11-13 23:28:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:28:17,187 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/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) [2024-11-13 23:28:17,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8023b356-f721-45eb-a3cd-1ee4ef1ed3c2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-13 23:28:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:28:18,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 23:28:18,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:28:18,366 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 [2024-11-13 23:28:18,669 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 15 treesize of output 11 [2024-11-13 23:28:18,687 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 23 treesize of output 1 [2024-11-13 23:28:18,744 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 23:28:18,744 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 [2024-11-13 23:28:18,770 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2024-11-13 23:28:18,770 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 1 case distinctions, treesize of input 20 treesize of output 22 [2024-11-13 23:28:18,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:28:18,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-13 23:28:18,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 23:28:18,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-13 23:28:18,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 23:28:19,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 23:28:19,095 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 17 treesize of output 9 [2024-11-13 23:28:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:28:19,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:28:19,318 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1021 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1022 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1021) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1022) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1021 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1021) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 23:28:19,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:19,975 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-13 23:28:19,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:19,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 55 [2024-11-13 23:28:20,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 [2024-11-13 23:28:20,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:20,082 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-13 23:28:20,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:20,094 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-13 23:28:20,097 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:28:20,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:20,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 38 treesize of output 41 [2024-11-13 23:28:20,123 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 23:28:20,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:20,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 30 [2024-11-13 23:28:26,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 23:28:26,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 197 treesize of output 833