./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:40:05,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:40:05,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 04:40:05,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:40:05,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:40:05,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:40:05,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:40:05,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:40:05,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:40:05,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:40:05,839 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:40:05,839 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:40:05,839 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:40:05,839 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:40:05,839 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:40:05,840 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:40:05,840 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:40:05,840 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:40:05,840 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:40:05,840 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:40:05,840 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:40:05,840 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:40:05,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:40:05,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:40:05,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:40:05,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:40:05,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:40:05,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:40:05,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:40:05,842 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:40:05,842 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:40:05,842 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:40:05,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:40:05,842 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:40:05,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:40:05,843 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:40:05,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:40:05,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:40:05,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:40:05,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:40:05,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:40:05,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:40:05,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:40:05,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:40:05,844 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:40:05,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:40:05,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:40:05,844 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:40:05,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:40:05,844 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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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 -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2024-11-14 04:40:06,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:40:06,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:40:06,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:40:06,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:40:06,129 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:40:06,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i Unable to find full path for "g++" [2024-11-14 04:40:08,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:40:08,469 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:40:08,472 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2024-11-14 04:40:08,493 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data/e9f71e6f6/c9d1ddcd443740ce9bb1ee8d1e4b6fde/FLAG010e34570 [2024-11-14 04:40:08,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data/e9f71e6f6/c9d1ddcd443740ce9bb1ee8d1e4b6fde [2024-11-14 04:40:08,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:40:08,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:40:08,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:40:08,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:40:08,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:40:08,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:40:08" (1/1) ... [2024-11-14 04:40:08,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6241baa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:08, skipping insertion in model container [2024-11-14 04:40:08,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:40:08" (1/1) ... [2024-11-14 04:40:08,580 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:40:08,985 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:40:09,079 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:40:09,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:40:09,111 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-14 04:40:09,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5da3cab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:09, skipping insertion in model container [2024-11-14 04:40:09,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:40:09,113 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 04:40:09,115 INFO L158 Benchmark]: Toolchain (without parser) took 593.59ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 77.2MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:40:09,117 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:40:09,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 590.33ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 77.2MB in the end (delta: 13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:40:09,119 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 590.33ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 77.2MB in the end (delta: 13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:40:11,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:40:11,818 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 04:40:11,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:40:11,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:40:11,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:40:11,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:40:11,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:40:11,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:40:11,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:40:11,871 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:40:11,871 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:40:11,871 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:40:11,872 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:40:11,872 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:40:11,872 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:40:11,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:40:11,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:40:11,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:40:11,873 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:40:11,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:40:11,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:40:11,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:40:11,873 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:40:11,873 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:40:11,873 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:40:11,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:40:11,876 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:40:11,876 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:40:11,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:40:11,877 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:40:11,877 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:40:11,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:40:11,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:40:11,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:40:11,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:40:11,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:40:11,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:40:11,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:40:11,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:40:11,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:40:11,879 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:40:11,879 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:40:11,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:40:11,879 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:40:11,880 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_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/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 -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2024-11-14 04:40:12,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:40:12,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:40:12,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:40:12,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:40:12,229 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:40:12,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i Unable to find full path for "g++" [2024-11-14 04:40:14,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:40:14,502 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:40:14,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2024-11-14 04:40:14,529 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data/842319717/25eaedeb162048909a07fee581b853da/FLAG99fa7de6c [2024-11-14 04:40:14,554 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/data/842319717/25eaedeb162048909a07fee581b853da [2024-11-14 04:40:14,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:40:14,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:40:14,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:40:14,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:40:14,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:40:14,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:40:14" (1/1) ... [2024-11-14 04:40:14,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333a9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:14, skipping insertion in model container [2024-11-14 04:40:14,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:40:14" (1/1) ... [2024-11-14 04:40:14,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:40:15,030 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:40:15,085 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:40:15,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:40:15,106 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 04:40:15,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:40:15,148 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:40:15,173 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:40:15,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:40:15,187 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:40:15,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:40:15,327 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:40:15,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15 WrapperNode [2024-11-14 04:40:15,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:40:15,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:40:15,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:40:15,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:40:15,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,398 INFO L138 Inliner]: procedures = 167, calls = 72, calls flagged for inlining = 22, calls inlined = 4, statements flattened = 18 [2024-11-14 04:40:15,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:40:15,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:40:15,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:40:15,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:40:15,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:40:15,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:40:15,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:40:15,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:40:15,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (1/1) ... [2024-11-14 04:40:15,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:40:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:40:15,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:40:15,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:40:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 04:40:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 04:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure free_8 [2024-11-14 04:40:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure free_8 [2024-11-14 04:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:40:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:40:15,713 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:40:15,715 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:40:15,867 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-14 04:40:15,868 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:40:15,881 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:40:15,881 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:40:15,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:40:15 BoogieIcfgContainer [2024-11-14 04:40:15,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:40:15,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:40:15,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:40:15,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:40:15,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:40:14" (1/3) ... [2024-11-14 04:40:15,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7b3bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:40:15, skipping insertion in model container [2024-11-14 04:40:15,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:40:15" (2/3) ... [2024-11-14 04:40:15,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7b3bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:40:15, skipping insertion in model container [2024-11-14 04:40:15,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:40:15" (3/3) ... [2024-11-14 04:40:15,895 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2024-11-14 04:40:15,910 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:40:15,911 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test8_2.i that has 3 procedures, 26 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-11-14 04:40:15,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:40:15,965 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;@5990d6f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:40:15,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 04:40:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:40:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 04:40:15,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:15,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:40:15,984 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting free_8Err0ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-14 04:40:15,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash 435848335, now seen corresponding path program 1 times [2024-11-14 04:40:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:40:16,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119265232] [2024-11-14 04:40:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:16,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:16,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:40:16,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:40:16,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 04:40:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:16,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:40:16,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:40:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:40:16,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:40:16,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:40:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119265232] [2024-11-14 04:40:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119265232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:40:16,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:40:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:40:16,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871312947] [2024-11-14 04:40:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:40:16,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:40:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:40:16,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:40:16,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:40:16,247 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:40:16,352 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-14 04:40:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:40:16,355 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 04:40:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:40:16,361 INFO L225 Difference]: With dead ends: 25 [2024-11-14 04:40:16,361 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 04:40:16,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:40:16,364 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:40:16,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 63 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:40:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 04:40:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-14 04:40:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:40:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-14 04:40:16,397 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2024-11-14 04:40:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:40:16,397 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-14 04:40:16,398 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-14 04:40:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:40:16,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:16,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:40:16,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 04:40:16,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:16,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting free_8Err1ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-14 04:40:16,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash 626396533, now seen corresponding path program 1 times [2024-11-14 04:40:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:40:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093992111] [2024-11-14 04:40:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:16,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:16,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:40:16,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:40:16,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 04:40:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:16,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:40:16,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:40:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:40:16,903 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:40:16,904 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:40:16,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093992111] [2024-11-14 04:40:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093992111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:40:16,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:40:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:40:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895833586] [2024-11-14 04:40:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:40:16,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:40:16,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:40:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:40:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:40:16,907 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:40:17,057 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-14 04:40:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:40:17,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-14 04:40:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:40:17,058 INFO L225 Difference]: With dead ends: 37 [2024-11-14 04:40:17,058 INFO L226 Difference]: Without dead ends: 37 [2024-11-14 04:40:17,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:40:17,059 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:40:17,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 55 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:40:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-14 04:40:17,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-14 04:40:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:40:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-14 04:40:17,067 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 13 [2024-11-14 04:40:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:40:17,067 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-14 04:40:17,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-14 04:40:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:40:17,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:17,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:40:17,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 04:40:17,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:17,269 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting free_8Err1ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-14 04:40:17,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1181057930, now seen corresponding path program 1 times [2024-11-14 04:40:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:40:17,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486266982] [2024-11-14 04:40:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:17,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:17,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:40:17,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:40:17,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 04:40:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:17,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:40:17,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:40:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:40:17,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:40:17,413 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:40:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486266982] [2024-11-14 04:40:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486266982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:40:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:40:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:40:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486211629] [2024-11-14 04:40:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:40:17,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:40:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:40:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:40:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:40:17,415 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:17,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:40:17,513 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2024-11-14 04:40:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:40:17,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-14 04:40:17,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:40:17,514 INFO L225 Difference]: With dead ends: 32 [2024-11-14 04:40:17,514 INFO L226 Difference]: Without dead ends: 32 [2024-11-14 04:40:17,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:40:17,515 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:40:17,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 79 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:40:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-14 04:40:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-14 04:40:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:40:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-11-14 04:40:17,525 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 13 [2024-11-14 04:40:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:40:17,527 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-11-14 04:40:17,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-11-14 04:40:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 04:40:17,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:17,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:40:17,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 04:40:17,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:17,730 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting free_8Err2ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-14 04:40:17,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2056543919, now seen corresponding path program 1 times [2024-11-14 04:40:17,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:40:17,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048540177] [2024-11-14 04:40:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:17,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:17,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:40:17,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:40:17,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 04:40:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:17,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:40:17,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:40:17,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 04:40:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:40:17,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:40:17,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:40:17,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048540177] [2024-11-14 04:40:17,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048540177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:40:17,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:40:17,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:40:17,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885999987] [2024-11-14 04:40:17,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:40:17,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:40:17,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:40:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:40:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:40:17,906 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:40:17,989 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2024-11-14 04:40:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:40:17,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-14 04:40:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:40:17,991 INFO L225 Difference]: With dead ends: 35 [2024-11-14 04:40:17,992 INFO L226 Difference]: Without dead ends: 35 [2024-11-14 04:40:17,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:40:17,995 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:40:17,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:40:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-14 04:40:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-14 04:40:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 04:40:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-11-14 04:40:18,006 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 14 [2024-11-14 04:40:18,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:40:18,007 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-11-14 04:40:18,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:40:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-11-14 04:40:18,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:40:18,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:18,008 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:40:18,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 04:40:18,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:18,209 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-14 04:40:18,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -503206040, now seen corresponding path program 1 times [2024-11-14 04:40:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:40:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634641936] [2024-11-14 04:40:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:18,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:18,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:40:18,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:40:18,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 04:40:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:18,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:40:18,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:40:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:40:18,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:40:18,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:40:18,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634641936] [2024-11-14 04:40:18,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634641936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:40:18,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:40:18,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:40:18,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903348573] [2024-11-14 04:40:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:40:18,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:40:18,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:40:18,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:40:18,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:40:18,327 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:40:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:40:18,366 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2024-11-14 04:40:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:40:18,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2024-11-14 04:40:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:40:18,368 INFO L225 Difference]: With dead ends: 38 [2024-11-14 04:40:18,368 INFO L226 Difference]: Without dead ends: 26 [2024-11-14 04:40:18,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:40:18,369 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:40:18,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:40:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-14 04:40:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-14 04:40:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:40:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-11-14 04:40:18,372 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2024-11-14 04:40:18,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:40:18,372 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-11-14 04:40:18,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:40:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-11-14 04:40:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:40:18,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:18,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:40:18,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-14 04:40:18,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:18,575 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting free_8Err2ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-14 04:40:18,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1029118526, now seen corresponding path program 1 times [2024-11-14 04:40:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:40:18,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709613187] [2024-11-14 04:40:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:18,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:18,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:40:18,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:40:18,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 04:40:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:40:18,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:40:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:40:18,665 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 04:40:18,665 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:40:18,666 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location free_8Err2ASSERT_VIOLATIONMEMORY_FREE (3 of 4 remaining) [2024-11-14 04:40:18,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_8Err0ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2024-11-14 04:40:18,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_8Err1ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2024-11-14 04:40:18,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-14 04:40:18,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-14 04:40:18,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:40:18,871 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-14 04:40:18,890 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:40:18,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:40:18 BoogieIcfgContainer [2024-11-14 04:40:18,893 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:40:18,894 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:40:18,894 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:40:18,894 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:40:18,895 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:40:15" (3/4) ... [2024-11-14 04:40:18,896 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 04:40:18,927 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:40:18,927 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:40:18,928 INFO L158 Benchmark]: Toolchain (without parser) took 4368.77ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 41.6MB in the end (delta: 17.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-11-14 04:40:18,928 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:40:18,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 769.07ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 30.4MB in the end (delta: 28.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:40:18,929 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.28ms. Allocated memory is still 83.9MB. Free memory was 30.4MB in the beginning and 28.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:40:18,929 INFO L158 Benchmark]: Boogie Preprocessor took 38.13ms. Allocated memory is still 83.9MB. Free memory was 28.6MB in the beginning and 27.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:40:18,929 INFO L158 Benchmark]: RCFGBuilder took 442.41ms. Allocated memory is still 83.9MB. Free memory was 27.6MB in the beginning and 54.8MB in the end (delta: -27.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2024-11-14 04:40:18,930 INFO L158 Benchmark]: TraceAbstraction took 3008.89ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 44.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2024-11-14 04:40:18,930 INFO L158 Benchmark]: Witness Printer took 33.20ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 41.6MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:40:18,932 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 769.07ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 30.4MB in the end (delta: 28.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.28ms. Allocated memory is still 83.9MB. Free memory was 30.4MB in the beginning and 28.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.13ms. Allocated memory is still 83.9MB. Free memory was 28.6MB in the beginning and 27.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 442.41ms. Allocated memory is still 83.9MB. Free memory was 27.6MB in the beginning and 54.8MB in the end (delta: -27.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3008.89ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 44.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Witness Printer took 33.20ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 41.6MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] int *a8; VAL [a8={0:0}, ldv_global_msg_list={1:0}] [L771] CALL entry_point() [L765] CALL alloc_8() [L759] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a8={0:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L759] RET, EXPR ldv_malloc(sizeof(int)) VAL [a8={0:0}, ldv_global_msg_list={1:0}] [L759] a8 = (int *)ldv_malloc(sizeof(int)) [L765] RET alloc_8() [L766] CALL free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) [L766] RET free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L767] CALL free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 153 IncrementalHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 120 mSDtfsCounter, 153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 271 SizeOfPredicates, 1 NumberOfNonLiveVariables, 216 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-14 04:40:18,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab7dfdfd-eba0-4376-a929-c517e48cdc4d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)