./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5 --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 7f08d75c904d21d6573220c7737d451cd978e8a22a153e855f8d685d88a1eb60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:36:16,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:36:16,691 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:36:16,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:36:16,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:36:16,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:36:16,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:36:16,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:36:16,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:36:16,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:36:16,728 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:36:16,729 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:36:16,729 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:36:16,730 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:36:16,730 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:36:16,731 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:36:16,731 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:36:16,732 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:36:16,733 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:36:16,733 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:36:16,734 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:36:16,734 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:36:16,735 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:36:16,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:36:16,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:36:16,736 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:36:16,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:36:16,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:36:16,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:36:16,738 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:36:16,739 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:36:16,739 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:36:16,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:36:16,740 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:36:16,740 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:36:16,741 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:36:16,741 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:36:16,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:36:16,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:36:16,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:36:16,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:16,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:36:16,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:36:16,744 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:36:16,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:36:16,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:36:16,746 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:36:16,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:36:16,746 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f08d75c904d21d6573220c7737d451cd978e8a22a153e855f8d685d88a1eb60 [2023-11-21 19:36:16,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:36:17,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:36:17,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:36:17,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:36:17,006 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:36:17,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i [2023-11-21 19:36:20,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:36:20,689 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:36:20,690 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i [2023-11-21 19:36:20,709 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data/74a723b13/2649e902b97f454eb833bb7117bdd2a9/FLAGf2ddc4fdd [2023-11-21 19:36:20,724 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data/74a723b13/2649e902b97f454eb833bb7117bdd2a9 [2023-11-21 19:36:20,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:36:20,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:36:20,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:20,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:36:20,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:36:20,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:20" (1/1) ... [2023-11-21 19:36:20,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789600ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:20, skipping insertion in model container [2023-11-21 19:36:20,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:20" (1/1) ... [2023-11-21 19:36:20,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:36:21,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:21,426 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-21 19:36:21,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33eb3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:21, skipping insertion in model container [2023-11-21 19:36:21,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:21,428 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 19:36:21,430 INFO L158 Benchmark]: Toolchain (without parser) took 700.21ms. Allocated memory is still 146.8MB. Free memory was 113.7MB in the beginning and 98.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 19:36:21,431 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:36:21,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 697.51ms. Allocated memory is still 146.8MB. Free memory was 113.3MB in the beginning and 98.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 19:36:21,434 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 697.51ms. Allocated memory is still 146.8MB. Free memory was 113.3MB in the beginning and 98.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5 --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 7f08d75c904d21d6573220c7737d451cd978e8a22a153e855f8d685d88a1eb60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:36:23,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:36:24,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 19:36:24,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:36:24,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:36:24,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:36:24,067 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:36:24,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:36:24,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:36:24,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:36:24,074 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:36:24,075 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:36:24,075 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:36:24,077 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:36:24,077 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:36:24,078 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:36:24,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:36:24,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:36:24,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:36:24,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:36:24,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:36:24,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:36:24,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:36:24,082 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:36:24,082 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:36:24,082 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:36:24,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:36:24,083 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:36:24,084 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:36:24,084 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:36:24,085 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:36:24,086 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:36:24,086 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:36:24,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:36:24,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:36:24,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:36:24,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:36:24,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:24,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:36:24,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:36:24,088 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:36:24,089 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:36:24,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:36:24,089 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:36:24,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:36:24,090 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f08d75c904d21d6573220c7737d451cd978e8a22a153e855f8d685d88a1eb60 [2023-11-21 19:36:24,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:36:24,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:36:24,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:36:24,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:36:24,480 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:36:24,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i [2023-11-21 19:36:27,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:36:28,126 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:36:28,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i [2023-11-21 19:36:28,149 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data/e0855d32e/49b33a9c71c245c0a017ba7be0163d15/FLAG4d41a4646 [2023-11-21 19:36:28,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/data/e0855d32e/49b33a9c71c245c0a017ba7be0163d15 [2023-11-21 19:36:28,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:36:28,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:36:28,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:28,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:36:28,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:36:28,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:28" (1/1) ... [2023-11-21 19:36:28,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d928b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:28, skipping insertion in model container [2023-11-21 19:36:28,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:28" (1/1) ... [2023-11-21 19:36:28,277 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:36:28,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:28,938 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 19:36:28,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:36:29,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:29,102 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:36:29,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:29,205 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:36:29,213 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:36:29,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29 WrapperNode [2023-11-21 19:36:29,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:29,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:29,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:36:29,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:36:29,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,323 INFO L138 Inliner]: procedures = 179, calls = 145, calls flagged for inlining = 33, calls inlined = 20, statements flattened = 341 [2023-11-21 19:36:29,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:29,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:36:29,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:36:29,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:36:29,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:36:29,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:36:29,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:36:29,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:36:29,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (1/1) ... [2023-11-21 19:36:29,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:29,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:36:29,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:36:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 19:36:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:36:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:36:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:36:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-21 19:36:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-21 19:36:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-21 19:36:29,553 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-21 19:36:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-21 19:36:29,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-21 19:36:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 19:36:29,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 19:36:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-21 19:36:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 19:36:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:36:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:36:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2023-11-21 19:36:29,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2023-11-21 19:36:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:36:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:36:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-21 19:36:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:36:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-21 19:36:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:36:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:36:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 19:36:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-21 19:36:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:36:29,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:36:29,826 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:36:29,828 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:36:29,833 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 19:36:31,365 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:36:31,482 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:36:31,483 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:36:31,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:31 BoogieIcfgContainer [2023-11-21 19:36:31,485 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:36:31,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:36:31,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:36:31,490 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:36:31,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:36:28" (1/3) ... [2023-11-21 19:36:31,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a67f40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:31, skipping insertion in model container [2023-11-21 19:36:31,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:29" (2/3) ... [2023-11-21 19:36:31,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a67f40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:31, skipping insertion in model container [2023-11-21 19:36:31,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:31" (3/3) ... [2023-11-21 19:36:31,493 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test12-2.i [2023-11-21 19:36:31,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:36:31,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 124 error locations. [2023-11-21 19:36:31,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:36:31,594 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d78423d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:36:31,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2023-11-21 19:36:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 268 states, 126 states have (on average 2.142857142857143) internal successors, (270), 249 states have internal predecessors, (270), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-21 19:36:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:36:31,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:31,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:31,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:36:31,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash -727898852, now seen corresponding path program 1 times [2023-11-21 19:36:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:31,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163317363] [2023-11-21 19:36:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:31,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:31,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:36:31,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 19:36:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:31,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 19:36:31,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:32,313 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 19:36:32,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 19:36:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:32,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:32,452 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:32,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163317363] [2023-11-21 19:36:32,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163317363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:32,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:32,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:36:32,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860958413] [2023-11-21 19:36:32,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:32,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:36:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:36:32,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:36:32,501 INFO L87 Difference]: Start difference. First operand has 268 states, 126 states have (on average 2.142857142857143) internal successors, (270), 249 states have internal predecessors, (270), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:35,053 INFO L93 Difference]: Finished difference Result 352 states and 390 transitions. [2023-11-21 19:36:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:36:35,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-21 19:36:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:35,071 INFO L225 Difference]: With dead ends: 352 [2023-11-21 19:36:35,071 INFO L226 Difference]: Without dead ends: 350 [2023-11-21 19:36:35,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:36:35,076 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 242 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:35,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 679 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-21 19:36:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-21 19:36:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 293. [2023-11-21 19:36:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 149 states have (on average 2.120805369127517) internal successors, (316), 270 states have internal predecessors, (316), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2023-11-21 19:36:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 352 transitions. [2023-11-21 19:36:35,143 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 352 transitions. Word has length 8 [2023-11-21 19:36:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:35,144 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 352 transitions. [2023-11-21 19:36:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 352 transitions. [2023-11-21 19:36:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:36:35,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:35,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:35,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:35,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:35,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:36:35,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash -727898851, now seen corresponding path program 1 times [2023-11-21 19:36:35,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:35,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39462740] [2023-11-21 19:36:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:35,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:35,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:35,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:36:35,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 19:36:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:35,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:36:35,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:35,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 19:36:35,763 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-21 19:36:35,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-21 19:36:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:35,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:35,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39462740] [2023-11-21 19:36:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39462740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:35,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:35,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:36:35,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703760286] [2023-11-21 19:36:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:35,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:36:35,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:36:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:36:35,949 INFO L87 Difference]: Start difference. First operand 293 states and 352 transitions. Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:38,119 INFO L93 Difference]: Finished difference Result 352 states and 424 transitions. [2023-11-21 19:36:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:36:38,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-21 19:36:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:38,124 INFO L225 Difference]: With dead ends: 352 [2023-11-21 19:36:38,124 INFO L226 Difference]: Without dead ends: 352 [2023-11-21 19:36:38,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:36:38,126 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 86 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:38,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1032 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 19:36:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-21 19:36:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 317. [2023-11-21 19:36:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 170 states have (on average 2.111764705882353) internal successors, (359), 291 states have internal predecessors, (359), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (20), 18 states have call predecessors, (20), 18 states have call successors, (20) [2023-11-21 19:36:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 397 transitions. [2023-11-21 19:36:38,178 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 397 transitions. Word has length 8 [2023-11-21 19:36:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:38,178 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 397 transitions. [2023-11-21 19:36:38,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 397 transitions. [2023-11-21 19:36:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:36:38,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:38,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:38,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:38,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:36:38,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1090024143, now seen corresponding path program 1 times [2023-11-21 19:36:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:38,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075842690] [2023-11-21 19:36:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:38,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:38,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:38,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:36:38,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 19:36:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:38,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 19:36:38,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:38,834 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 19:36:38,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 19:36:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:39,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:39,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:39,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075842690] [2023-11-21 19:36:39,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075842690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:39,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:39,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:36:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513105737] [2023-11-21 19:36:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 19:36:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 19:36:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:36:39,021 INFO L87 Difference]: Start difference. First operand 317 states and 397 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:41,751 INFO L93 Difference]: Finished difference Result 352 states and 436 transitions. [2023-11-21 19:36:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:36:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-21 19:36:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:41,755 INFO L225 Difference]: With dead ends: 352 [2023-11-21 19:36:41,755 INFO L226 Difference]: Without dead ends: 352 [2023-11-21 19:36:41,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:36:41,756 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 54 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:41,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1134 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-21 19:36:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-21 19:36:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 319. [2023-11-21 19:36:41,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 171 states have (on average 2.0935672514619883) internal successors, (358), 292 states have internal predecessors, (358), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (20), 18 states have call predecessors, (20), 18 states have call successors, (20) [2023-11-21 19:36:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 396 transitions. [2023-11-21 19:36:41,779 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 396 transitions. Word has length 9 [2023-11-21 19:36:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:41,779 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 396 transitions. [2023-11-21 19:36:41,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 396 transitions. [2023-11-21 19:36:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:36:41,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:41,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:41,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:41,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:36:41,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1090024142, now seen corresponding path program 1 times [2023-11-21 19:36:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:41,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530549967] [2023-11-21 19:36:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:41,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:41,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:41,996 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:36:42,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 19:36:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:42,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 19:36:42,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:42,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 19:36:42,457 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-21 19:36:42,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-21 19:36:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:42,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:42,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:42,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530549967] [2023-11-21 19:36:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530549967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:42,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:36:42,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476892920] [2023-11-21 19:36:42,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:42,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 19:36:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 19:36:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:36:42,715 INFO L87 Difference]: Start difference. First operand 319 states and 396 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:45,305 INFO L93 Difference]: Finished difference Result 304 states and 359 transitions. [2023-11-21 19:36:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:36:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-21 19:36:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:45,309 INFO L225 Difference]: With dead ends: 304 [2023-11-21 19:36:45,309 INFO L226 Difference]: Without dead ends: 304 [2023-11-21 19:36:45,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:36:45,310 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 11 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:45,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1282 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-21 19:36:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-21 19:36:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2023-11-21 19:36:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 155 states have (on average 2.0709677419354837) internal successors, (321), 276 states have internal predecessors, (321), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2023-11-21 19:36:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 357 transitions. [2023-11-21 19:36:45,326 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 357 transitions. Word has length 9 [2023-11-21 19:36:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:45,327 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 357 transitions. [2023-11-21 19:36:45,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 357 transitions. [2023-11-21 19:36:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:36:45,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:45,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:45,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-21 19:36:45,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:45,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:36:45,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash 458937456, now seen corresponding path program 1 times [2023-11-21 19:36:45,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:45,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314661010] [2023-11-21 19:36:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:45,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:45,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:45,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:36:45,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 19:36:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:45,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:36:45,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:45,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:45,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:45,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314661010] [2023-11-21 19:36:45,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314661010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:45,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:45,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:36:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134427541] [2023-11-21 19:36:45,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:45,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:36:45,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:36:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:36:45,889 INFO L87 Difference]: Start difference. First operand 301 states and 357 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:48,277 INFO L93 Difference]: Finished difference Result 304 states and 359 transitions. [2023-11-21 19:36:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:36:48,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-21 19:36:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:48,280 INFO L225 Difference]: With dead ends: 304 [2023-11-21 19:36:48,281 INFO L226 Difference]: Without dead ends: 299 [2023-11-21 19:36:48,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:36:48,282 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 42 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:48,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 921 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 19:36:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-21 19:36:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-11-21 19:36:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 152 states have (on average 2.085526315789474) internal successors, (317), 274 states have internal predecessors, (317), 17 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-21 19:36:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 354 transitions. [2023-11-21 19:36:48,296 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 354 transitions. Word has length 11 [2023-11-21 19:36:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:48,296 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 354 transitions. [2023-11-21 19:36:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 354 transitions. [2023-11-21 19:36:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:36:48,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:48,298 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:48,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:48,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:48,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:36:48,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash 351225669, now seen corresponding path program 1 times [2023-11-21 19:36:48,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:48,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819068457] [2023-11-21 19:36:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:48,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:48,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:48,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:36:48,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 19:36:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:48,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:36:48,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:48,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:49,227 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:49,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819068457] [2023-11-21 19:36:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819068457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:36:49,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [410541132] [2023-11-21 19:36:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:49,228 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 19:36:49,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 [2023-11-21 19:36:49,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 19:36:49,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-21 19:36:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:49,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:36:49,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:49,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [410541132] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:36:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706383273] [2023-11-21 19:36:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:50,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:50,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:36:50,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 19:36:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:50,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:36:50,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:50,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:50,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706383273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:36:50,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-21 19:36:50,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2023-11-21 19:36:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020074924] [2023-11-21 19:36:50,756 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-21 19:36:50,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:36:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:50,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:36:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:36:50,758 INFO L87 Difference]: Start difference. First operand 299 states and 354 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:36:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:51,165 INFO L93 Difference]: Finished difference Result 298 states and 352 transitions. [2023-11-21 19:36:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:36:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-11-21 19:36:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:51,169 INFO L225 Difference]: With dead ends: 298 [2023-11-21 19:36:51,169 INFO L226 Difference]: Without dead ends: 298 [2023-11-21 19:36:51,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:36:51,170 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 215 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:51,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 812 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:36:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-21 19:36:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-11-21 19:36:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 152 states have (on average 2.0723684210526314) internal successors, (315), 273 states have internal predecessors, (315), 17 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-21 19:36:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 352 transitions. [2023-11-21 19:36:51,184 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 352 transitions. Word has length 12 [2023-11-21 19:36:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:51,184 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 352 transitions. [2023-11-21 19:36:51,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:36:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 352 transitions. [2023-11-21 19:36:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:36:51,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:51,186 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:51,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:51,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:51,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:51,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:51,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:36:51,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:51,791 INFO L85 PathProgramCache]: Analyzing trace with hash 351225418, now seen corresponding path program 1 times [2023-11-21 19:36:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300809082] [2023-11-21 19:36:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:51,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:36:51,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:51,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:36:51,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 19:36:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:51,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 19:36:51,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:51,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 19:36:52,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 19:36:52,523 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 19:36:52,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 19:36:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:52,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:53,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300809082] [2023-11-21 19:36:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300809082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:36:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2009134339] [2023-11-21 19:36:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:53,743 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 19:36:53,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 [2023-11-21 19:36:53,749 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 19:36:53,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-21 19:36:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:53,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 19:36:53,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:53,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 19:36:54,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 19:36:54,339 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 19:36:54,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 19:36:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:54,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:55,061 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-21 19:36:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:56,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2009134339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:36:56,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269460967] [2023-11-21 19:36:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:56,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:56,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:56,207 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:36:56,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 19:36:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:56,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 19:36:56,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:56,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 19:36:56,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 19:36:56,548 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~client~0#1.base_BEFORE_CALL_1| (_ BitVec 32))) (and (bvult |v_ULTIMATE.start_entry_point_~client~0#1.base_BEFORE_CALL_1| |c_#StackHeapBarrier|) (not (= |v_ULTIMATE.start_entry_point_~client~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (let ((.cse1 (= |c_ldv_malloc_#res.base| (_ bv0 32))) (.cse0 (= |c_ldv_malloc_#res.offset| (_ bv0 32)))) (or (and (= (store |c_old(#valid)| |c_ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|) (= (select |c_old(#valid)| |c_ldv_malloc_#res.base|) (_ bv0 1)) .cse0 (not .cse1) (bvult |c_ldv_malloc_#res.base| |c_#StackHeapBarrier|)) (and .cse1 (= |c_#valid| |c_old(#valid)|) .cse0)))) is different from true [2023-11-21 19:36:56,637 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-21 19:36:56,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-21 19:36:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-21 19:36:57,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:59,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269460967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:36:59,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2023-11-21 19:36:59,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6, 10] total 20 [2023-11-21 19:36:59,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881994583] [2023-11-21 19:36:59,876 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2023-11-21 19:36:59,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-21 19:36:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-21 19:36:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=443, Unknown=2, NotChecked=44, Total=600 [2023-11-21 19:36:59,878 INFO L87 Difference]: Start difference. First operand 298 states and 352 transitions. Second operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 19:37:00,222 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ldv_malloc_#res.offset| (_ bv0 32))) (.cse0 (= |c_ldv_malloc_#res.base| (_ bv0 32)))) (let ((.cse2 (select |c_#valid| |c_ldv_malloc_#res.base|)) (.cse4 (= (select |c_old(#valid)| |c_ldv_malloc_#res.base|) (_ bv0 1))) (.cse5 (not .cse0)) (.cse3 (bvult |c_ldv_malloc_#res.base| |c_#StackHeapBarrier|)) (.cse6 (and .cse0 (= |c_#valid| |c_old(#valid)|) .cse1))) (and (or (and .cse0 .cse1) (and (= (_ bv0 1) (bvadd (_ bv1 1) .cse2)) .cse1 .cse3)) (exists ((|v_ULTIMATE.start_entry_point_~client~0#1.base_BEFORE_CALL_1| (_ BitVec 32))) (and (bvult |v_ULTIMATE.start_entry_point_~client~0#1.base_BEFORE_CALL_1| |c_#StackHeapBarrier|) (not (= |v_ULTIMATE.start_entry_point_~client~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (or (and .cse4 (= |c_#valid| (store |c_old(#valid)| |c_ldv_malloc_#res.base| .cse2)) .cse1 .cse5 .cse3) .cse6) (or (and (= (store |c_old(#valid)| |c_ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|) .cse4 .cse1 .cse5 .cse3) .cse6)))) is different from true [2023-11-21 19:37:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:37:06,964 INFO L93 Difference]: Finished difference Result 330 states and 377 transitions. [2023-11-21 19:37:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 19:37:06,965 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 12 [2023-11-21 19:37:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:37:06,968 INFO L225 Difference]: With dead ends: 330 [2023-11-21 19:37:06,968 INFO L226 Difference]: Without dead ends: 330 [2023-11-21 19:37:06,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=165, Invalid=652, Unknown=3, NotChecked=110, Total=930 [2023-11-21 19:37:06,970 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 431 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 70 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:37:06,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1146 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1522 Invalid, 5 Unknown, 354 Unchecked, 6.6s Time] [2023-11-21 19:37:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-11-21 19:37:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2023-11-21 19:37:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 159 states have (on average 2.0125786163522013) internal successors, (320), 277 states have internal predecessors, (320), 17 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-21 19:37:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 357 transitions. [2023-11-21 19:37:06,990 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 357 transitions. Word has length 12 [2023-11-21 19:37:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:37:06,991 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 357 transitions. [2023-11-21 19:37:06,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 19:37:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 357 transitions. [2023-11-21 19:37:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:37:06,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:37:06,992 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:37:06,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-21 19:37:07,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 19:37:07,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-21 19:37:07,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt [2023-11-21 19:37:07,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_msg_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (and 121 more)] === [2023-11-21 19:37:07,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:37:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 351225419, now seen corresponding path program 1 times [2023-11-21 19:37:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:37:07,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227777747] [2023-11-21 19:37:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:37:07,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:37:07,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:37:07,597 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:37:07,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 19:37:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:37:07,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 19:37:07,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:37:07,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:37:07,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 19:37:07,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 19:37:07,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 19:37:08,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:37:08,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 19:37:08,366 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 19:37:08,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2023-11-21 19:37:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:37:08,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:37:09,774 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:37:09,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227777747] [2023-11-21 19:37:09,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227777747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:37:09,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1733855626] [2023-11-21 19:37:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:37:09,775 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 19:37:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 [2023-11-21 19:37:09,777 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 19:37:09,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-21 19:37:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:37:09,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 19:37:09,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:37:09,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:37:10,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 19:37:10,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 19:37:10,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 19:37:10,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 19:37:10,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 39 [2023-11-21 19:37:10,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 19:37:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:37:10,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:37:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1733855626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:37:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591998162] [2023-11-21 19:37:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:37:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:37:11,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:37:11,510 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:37:11,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2bf1c8-9af8-4975-90f5-ead252e42abe/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process