./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc 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_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:55:37,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:55:37,111 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 13:55:37,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:55:37,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:55:37,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:55:37,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:55:37,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:55:37,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:55:37,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:55:37,141 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:55:37,142 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:55:37,142 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:55:37,143 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:55:37,143 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:55:37,144 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:55:37,144 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:55:37,145 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:55:37,145 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:55:37,146 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:55:37,147 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:55:37,147 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:55:37,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:55:37,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:55:37,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:55:37,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:55:37,150 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:55:37,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:55:37,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:55:37,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:55:37,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:55:37,152 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:55:37,152 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:55:37,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:55:37,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:55:37,153 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:55:37,153 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:55:37,153 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:55:37,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:55:37,154 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:55:37,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:55:37,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:55:37,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:55:37,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:55:37,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:55:37,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:55:37,155 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:55:37,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:55:37,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:55:37,156 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:55:37,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:55:37,156 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_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2023-12-02 13:55:37,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:55:37,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:55:37,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:55:37,369 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:55:37,369 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:55:37,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2023-12-02 13:55:40,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:55:40,434 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:55:40,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2023-12-02 13:55:40,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data/8a24280a2/2efe18e6c98048c0b9dc996d558fad0a/FLAG8378e06eb [2023-12-02 13:55:40,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data/8a24280a2/2efe18e6c98048c0b9dc996d558fad0a [2023-12-02 13:55:40,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:55:40,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:55:40,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:55:40,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:55:40,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:55:40,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:55:40" (1/1) ... [2023-12-02 13:55:40,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7bddab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:40, skipping insertion in model container [2023-12-02 13:55:40,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:55:40" (1/1) ... [2023-12-02 13:55:40,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:55:41,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:55:41,252 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) [2023-12-02 13:55:41,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58a1f21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:41, skipping insertion in model container [2023-12-02 13:55:41,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:55:41,253 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 13:55:41,254 INFO L158 Benchmark]: Toolchain (without parser) took 777.90ms. Allocated memory is still 140.5MB. Free memory was 101.7MB in the beginning and 67.7MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-12-02 13:55:41,255 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:55:41,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 775.87ms. Allocated memory is still 140.5MB. Free memory was 101.7MB in the beginning and 67.7MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-12-02 13:55:41,257 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 775.87ms. Allocated memory is still 140.5MB. Free memory was 101.7MB in the beginning and 67.7MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:55:42,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:55:43,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 13:55:43,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:55:43,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:55:43,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:55:43,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:55:43,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:55:43,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:55:43,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:55:43,080 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:55:43,081 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:55:43,081 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:55:43,082 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:55:43,082 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:55:43,083 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:55:43,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:55:43,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:55:43,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:55:43,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:55:43,086 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:55:43,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:55:43,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:55:43,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:55:43,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:55:43,088 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:55:43,088 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:55:43,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:55:43,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:55:43,089 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:55:43,090 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:55:43,090 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:55:43,090 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:55:43,091 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:55:43,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:55:43,091 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:55:43,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:55:43,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:55:43,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:55:43,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:55:43,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:55:43,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:55:43,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:55:43,093 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:55:43,093 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:55:43,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:55:43,094 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:55:43,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:55:43,094 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_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2023-12-02 13:55:43,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:55:43,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:55:43,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:55:43,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:55:43,387 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:55:43,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2023-12-02 13:55:46,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:55:46,545 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:55:46,546 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2023-12-02 13:55:46,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data/3e406688f/b93c65f37b294b6fb25c00ceadc935f9/FLAGd1c45c2c0 [2023-12-02 13:55:46,578 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/data/3e406688f/b93c65f37b294b6fb25c00ceadc935f9 [2023-12-02 13:55:46,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:55:46,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:55:46,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:55:46,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:55:46,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:55:46,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:55:46" (1/1) ... [2023-12-02 13:55:46,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc94670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:46, skipping insertion in model container [2023-12-02 13:55:46,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:55:46" (1/1) ... [2023-12-02 13:55:46,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:55:47,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:55:47,299 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:55:47,329 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:55:47,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:55:47,491 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:55:47,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:55:47,637 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:55:47,645 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:55:47,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47 WrapperNode [2023-12-02 13:55:47,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:55:47,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:55:47,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:55:47,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:55:47,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,787 INFO L138 Inliner]: procedures = 180, calls = 783, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3025 [2023-12-02 13:55:47,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:55:47,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:55:47,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:55:47,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:55:47,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:55:47,937 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:55:47,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:55:47,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:55:47,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (1/1) ... [2023-12-02 13:55:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:55:47,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:55:47,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:55:47,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:55:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 13:55:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 13:55:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 13:55:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 13:55:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:55:48,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:55:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 13:55:48,012 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 13:55:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:55:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:55:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:55:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:55:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 13:55:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:55:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:55:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 13:55:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:55:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:55:48,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:55:48,225 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:55:48,228 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:55:56,000 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:55:56,072 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:55:56,073 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 13:55:56,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:55:56 BoogieIcfgContainer [2023-12-02 13:55:56,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:55:56,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:55:56,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:55:56,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:55:56,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:55:46" (1/3) ... [2023-12-02 13:55:56,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0be9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:55:56, skipping insertion in model container [2023-12-02 13:55:56,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:55:47" (2/3) ... [2023-12-02 13:55:56,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0be9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:55:56, skipping insertion in model container [2023-12-02 13:55:56,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:55:56" (3/3) ... [2023-12-02 13:55:56,083 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2023-12-02 13:55:56,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:55:56,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 13:55:56,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:55:56,171 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;@4566713e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:55:56,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 13:55:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 1202 states, 691 states have (on average 1.9088277858176557) internal successors, (1319), 1195 states have internal predecessors, (1319), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2023-12-02 13:55:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:55:56,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:55:56,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:55:56,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:55:56,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:55:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash 465755508, now seen corresponding path program 1 times [2023-12-02 13:55:56,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:55:56,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510188658] [2023-12-02 13:55:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:55:56,205 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 [2023-12-02 13:55:56,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:55:56,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:55:56,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:55:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:55:56,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:55:56,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:55:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:55:56,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:55:56,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:55:56,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510188658] [2023-12-02 13:55:56,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510188658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:55:56,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:55:56,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:55:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420470257] [2023-12-02 13:55:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:55:56,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:55:56,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:55:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:55:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:55:56,471 INFO L87 Difference]: Start difference. First operand has 1202 states, 691 states have (on average 1.9088277858176557) internal successors, (1319), 1195 states have internal predecessors, (1319), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:55:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:55:56,605 INFO L93 Difference]: Finished difference Result 1200 states and 2257 transitions. [2023-12-02 13:55:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:55:56,607 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 13:55:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:55:56,638 INFO L225 Difference]: With dead ends: 1200 [2023-12-02 13:55:56,638 INFO L226 Difference]: Without dead ends: 1199 [2023-12-02 13:55:56,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:55:56,643 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:55:56,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2252 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:55:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-02 13:55:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1199. [2023-12-02 13:55:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 690 states have (on average 1.808695652173913) internal successors, (1248), 1192 states have internal predecessors, (1248), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-12-02 13:55:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2256 transitions. [2023-12-02 13:55:56,932 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2256 transitions. Word has length 10 [2023-12-02 13:55:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:55:56,933 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 2256 transitions. [2023-12-02 13:55:56,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:55:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2256 transitions. [2023-12-02 13:55:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 13:55:56,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:55:56,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:55:56,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:55:57,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:55:57,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:55:57,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:55:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash -651494860, now seen corresponding path program 1 times [2023-12-02 13:55:57,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:55:57,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807570674] [2023-12-02 13:55:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:55:57,137 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 [2023-12-02 13:55:57,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:55:57,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:55:57,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:55:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:55:57,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:55:57,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:55:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:55:57,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:55:57,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:55:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807570674] [2023-12-02 13:55:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807570674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:55:57,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:55:57,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:55:57,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719490588] [2023-12-02 13:55:57,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:55:57,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:55:57,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:55:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:55:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:55:57,391 INFO L87 Difference]: Start difference. First operand 1199 states and 2256 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:55:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:55:58,541 INFO L93 Difference]: Finished difference Result 2319 states and 4412 transitions. [2023-12-02 13:55:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:55:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 13:55:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:55:58,564 INFO L225 Difference]: With dead ends: 2319 [2023-12-02 13:55:58,564 INFO L226 Difference]: Without dead ends: 2319 [2023-12-02 13:55:58,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:55:58,566 INFO L413 NwaCegarLoop]: 2240 mSDtfsCounter, 1153 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:55:58,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 4459 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 13:55:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2023-12-02 13:55:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2288. [2023-12-02 13:55:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 1279 states have (on average 1.8483189992181392) internal successors, (2364), 2281 states have internal predecessors, (2364), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-12-02 13:55:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 4372 transitions. [2023-12-02 13:55:58,950 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 4372 transitions. Word has length 12 [2023-12-02 13:55:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:55:58,950 INFO L495 AbstractCegarLoop]: Abstraction has 2288 states and 4372 transitions. [2023-12-02 13:55:58,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:55:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 4372 transitions. [2023-12-02 13:55:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 13:55:58,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:55:58,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:55:58,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 13:55:59,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:55:59,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:55:59,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:55:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash -649647818, now seen corresponding path program 1 times [2023-12-02 13:55:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:55:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426477254] [2023-12-02 13:55:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:55:59,155 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 [2023-12-02 13:55:59,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:55:59,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:55:59,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:55:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:55:59,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:55:59,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:55:59,377 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:55:59,378 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:55:59,379 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:55:59,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 13:55:59,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:55:59,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 13:55:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:55:59,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:55:59,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:55:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426477254] [2023-12-02 13:55:59,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426477254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:55:59,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:55:59,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:55:59,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180500103] [2023-12-02 13:55:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:55:59,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:55:59,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:55:59,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:55:59,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:55:59,477 INFO L87 Difference]: Start difference. First operand 2288 states and 4372 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:56:03,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:09,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:09,710 INFO L93 Difference]: Finished difference Result 4379 states and 8492 transitions. [2023-12-02 13:56:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:56:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 13:56:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:09,745 INFO L225 Difference]: With dead ends: 4379 [2023-12-02 13:56:09,745 INFO L226 Difference]: Without dead ends: 4379 [2023-12-02 13:56:09,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:56:09,747 INFO L413 NwaCegarLoop]: 2408 mSDtfsCounter, 1158 mSDsluCounter, 4083 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 6491 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:09,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 6491 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 13:56:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2023-12-02 13:56:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 2287. [2023-12-02 13:56:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1278 states have (on average 1.8482003129890454) internal successors, (2362), 2280 states have internal predecessors, (2362), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-12-02 13:56:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 4370 transitions. [2023-12-02 13:56:10,213 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 4370 transitions. Word has length 12 [2023-12-02 13:56:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:10,213 INFO L495 AbstractCegarLoop]: Abstraction has 2287 states and 4370 transitions. [2023-12-02 13:56:10,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:56:10,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 4370 transitions. [2023-12-02 13:56:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 13:56:10,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:10,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:10,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 13:56:10,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:56:10,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:10,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1729148505, now seen corresponding path program 1 times [2023-12-02 13:56:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:10,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669024089] [2023-12-02 13:56:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:10,422 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 [2023-12-02 13:56:10,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:10,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:10,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:56:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:10,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:56:10,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:56:10,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:56:10,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669024089] [2023-12-02 13:56:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669024089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:10,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:56:10,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:56:10,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187006426] [2023-12-02 13:56:10,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:10,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:56:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:10,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:56:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:56:10,973 INFO L87 Difference]: Start difference. First operand 2287 states and 4370 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:11,135 INFO L93 Difference]: Finished difference Result 2295 states and 4362 transitions. [2023-12-02 13:56:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:56:11,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-12-02 13:56:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:11,148 INFO L225 Difference]: With dead ends: 2295 [2023-12-02 13:56:11,148 INFO L226 Difference]: Without dead ends: 2295 [2023-12-02 13:56:11,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:56:11,150 INFO L413 NwaCegarLoop]: 2223 mSDtfsCounter, 36 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6645 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:11,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6645 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:56:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2023-12-02 13:56:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2293. [2023-12-02 13:56:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 1284 states have (on average 1.8317757009345794) internal successors, (2352), 2286 states have internal predecessors, (2352), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-12-02 13:56:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 4360 transitions. [2023-12-02 13:56:11,504 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 4360 transitions. Word has length 81 [2023-12-02 13:56:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:11,505 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 4360 transitions. [2023-12-02 13:56:11,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:11,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 4360 transitions. [2023-12-02 13:56:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 13:56:11,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:11,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:11,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:56:11,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:56:11,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1653188429, now seen corresponding path program 1 times [2023-12-02 13:56:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977533159] [2023-12-02 13:56:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:11,725 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 [2023-12-02 13:56:11,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:11,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:11,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:56:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:12,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:56:12,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:56:12,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:56:12,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:12,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977533159] [2023-12-02 13:56:12,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977533159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:12,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:56:12,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:56:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268875149] [2023-12-02 13:56:12,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:12,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:56:12,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:56:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:56:12,282 INFO L87 Difference]: Start difference. First operand 2293 states and 4360 transitions. Second operand has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:56:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:12,385 INFO L93 Difference]: Finished difference Result 2295 states and 4363 transitions. [2023-12-02 13:56:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:56:12,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2023-12-02 13:56:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:12,402 INFO L225 Difference]: With dead ends: 2295 [2023-12-02 13:56:12,402 INFO L226 Difference]: Without dead ends: 2295 [2023-12-02 13:56:12,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:56:12,403 INFO L413 NwaCegarLoop]: 2239 mSDtfsCounter, 1 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6713 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:12,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6713 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:56:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2023-12-02 13:56:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2295. [2023-12-02 13:56:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 1285 states have (on average 1.8319066147859921) internal successors, (2354), 2288 states have internal predecessors, (2354), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-12-02 13:56:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 4363 transitions. [2023-12-02 13:56:12,850 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 4363 transitions. Word has length 81 [2023-12-02 13:56:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:12,850 INFO L495 AbstractCegarLoop]: Abstraction has 2295 states and 4363 transitions. [2023-12-02 13:56:12,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:56:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 4363 transitions. [2023-12-02 13:56:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 13:56:12,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:12,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:12,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 13:56:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:56:13,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:13,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1545409545, now seen corresponding path program 1 times [2023-12-02 13:56:13,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:13,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114007050] [2023-12-02 13:56:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:13,058 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 [2023-12-02 13:56:13,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:13,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:13,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 13:56:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:13,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:13,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:56:13,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:13,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114007050] [2023-12-02 13:56:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114007050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1708363073] [2023-12-02 13:56:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:13,754 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:13,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:56:13,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:56:13,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 13:56:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:14,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:14,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:56:14,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:56:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1708363073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:14,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:56:14,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 13:56:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258989608] [2023-12-02 13:56:14,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:14,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:56:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:56:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:56:14,475 INFO L87 Difference]: Start difference. First operand 2295 states and 4363 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:16,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:18,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:21,588 INFO L93 Difference]: Finished difference Result 1318 states and 2390 transitions. [2023-12-02 13:56:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:56:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-12-02 13:56:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:21,597 INFO L225 Difference]: With dead ends: 1318 [2023-12-02 13:56:21,598 INFO L226 Difference]: Without dead ends: 1318 [2023-12-02 13:56:21,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:56:21,599 INFO L413 NwaCegarLoop]: 2237 mSDtfsCounter, 2412 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1005 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2412 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:21,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2412 Valid, 3395 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2023-12-02 13:56:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-12-02 13:56:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1249. [2023-12-02 13:56:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 739 states have (on average 1.746955345060893) internal successors, (1291), 1242 states have internal predecessors, (1291), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 13:56:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2300 transitions. [2023-12-02 13:56:21,815 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2300 transitions. Word has length 83 [2023-12-02 13:56:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:21,816 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 2300 transitions. [2023-12-02 13:56:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2300 transitions. [2023-12-02 13:56:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 13:56:21,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:21,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:21,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 13:56:22,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 13:56:22,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:56:22,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:22,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:22,223 INFO L85 PathProgramCache]: Analyzing trace with hash 330982924, now seen corresponding path program 1 times [2023-12-02 13:56:22,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:22,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804259186] [2023-12-02 13:56:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:22,224 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 [2023-12-02 13:56:22,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:22,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:22,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 13:56:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:22,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:22,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:22,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:56:22,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804259186] [2023-12-02 13:56:22,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804259186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1954797548] [2023-12-02 13:56:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:22,789 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:56:22,790 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:56:22,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 13:56:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:23,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:23,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:23,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:56:23,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1954797548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303047005] [2023-12-02 13:56:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:23,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:56:23,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:56:23,714 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:56:23,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:56:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:24,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:56:24,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:56:24,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:56:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303047005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:24,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 13:56:24,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-12-02 13:56:24,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620863145] [2023-12-02 13:56:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:24,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:56:24,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:56:24,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:56:24,320 INFO L87 Difference]: Start difference. First operand 1249 states and 2300 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:26,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:28,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:32,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:33,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:35,376 INFO L93 Difference]: Finished difference Result 1251 states and 2302 transitions. [2023-12-02 13:56:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:56:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-12-02 13:56:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:35,384 INFO L225 Difference]: With dead ends: 1251 [2023-12-02 13:56:35,384 INFO L226 Difference]: Without dead ends: 1251 [2023-12-02 13:56:35,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:56:35,385 INFO L413 NwaCegarLoop]: 2210 mSDtfsCounter, 1215 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:35,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 4429 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 582 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 13:56:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-02 13:56:35,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1250. [2023-12-02 13:56:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 740 states have (on average 1.7459459459459459) internal successors, (1292), 1243 states have internal predecessors, (1292), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 13:56:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 2301 transitions. [2023-12-02 13:56:35,562 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 2301 transitions. Word has length 92 [2023-12-02 13:56:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:35,562 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 2301 transitions. [2023-12-02 13:56:35,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 2301 transitions. [2023-12-02 13:56:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 13:56:35,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:35,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:35,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-02 13:56:35,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 13:56:35,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 13:56:36,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:56:36,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:36,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash 332829966, now seen corresponding path program 1 times [2023-12-02 13:56:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:36,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408426773] [2023-12-02 13:56:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:36,168 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 [2023-12-02 13:56:36,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:36,169 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:36,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 13:56:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:36,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:36,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:36,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:56:36,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408426773] [2023-12-02 13:56:36,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408426773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:36,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [309271684] [2023-12-02 13:56:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:36,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:36,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:56:36,754 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:56:36,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 13:56:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:37,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:37,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:37,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:56:37,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [309271684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:37,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899338064] [2023-12-02 13:56:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:37,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:56:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:56:37,608 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:56:37,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:56:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:38,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:56:38,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:38,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:56:38,102 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:56:38,102 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:56:38,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 13:56:38,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:56:38,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 13:56:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:56:38,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:56:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899338064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 13:56:38,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-12-02 13:56:38,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467118202] [2023-12-02 13:56:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:38,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:56:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:56:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:56:38,206 INFO L87 Difference]: Start difference. First operand 1250 states and 2301 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:41,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:56:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:45,629 INFO L93 Difference]: Finished difference Result 2313 states and 4383 transitions. [2023-12-02 13:56:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:56:45,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-12-02 13:56:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:45,646 INFO L225 Difference]: With dead ends: 2313 [2023-12-02 13:56:45,647 INFO L226 Difference]: Without dead ends: 2313 [2023-12-02 13:56:45,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:56:45,648 INFO L413 NwaCegarLoop]: 2265 mSDtfsCounter, 1119 mSDsluCounter, 3935 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 6200 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:45,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 6200 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 636 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2023-12-02 13:56:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2023-12-02 13:56:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 1252. [2023-12-02 13:56:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 742 states have (on average 1.743935309973046) internal successors, (1294), 1245 states have internal predecessors, (1294), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 13:56:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 2303 transitions. [2023-12-02 13:56:46,006 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 2303 transitions. Word has length 92 [2023-12-02 13:56:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:46,007 INFO L495 AbstractCegarLoop]: Abstraction has 1252 states and 2303 transitions. [2023-12-02 13:56:46,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 2303 transitions. [2023-12-02 13:56:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:56:46,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:46,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:46,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:56:46,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 13:56:46,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 13:56:46,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:46,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:46,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:46,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1976726133, now seen corresponding path program 1 times [2023-12-02 13:56:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:46,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320495071] [2023-12-02 13:56:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:46,613 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 [2023-12-02 13:56:46,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:46,614 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:46,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 13:56:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:47,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:47,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:56:47,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:47,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320495071] [2023-12-02 13:56:47,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320495071] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [793420065] [2023-12-02 13:56:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:47,266 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:47,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:56:47,267 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:56:47,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 13:56:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:48,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:56:48,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:56:48,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:56:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [793420065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:48,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:56:48,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 13:56:48,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493974491] [2023-12-02 13:56:48,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:56:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:56:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:56:48,054 INFO L87 Difference]: Start difference. First operand 1252 states and 2303 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:48,193 INFO L93 Difference]: Finished difference Result 1273 states and 2324 transitions. [2023-12-02 13:56:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:56:48,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 126 [2023-12-02 13:56:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:48,203 INFO L225 Difference]: With dead ends: 1273 [2023-12-02 13:56:48,203 INFO L226 Difference]: Without dead ends: 1273 [2023-12-02 13:56:48,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:56:48,204 INFO L413 NwaCegarLoop]: 2219 mSDtfsCounter, 8 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:48,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4424 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:56:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-12-02 13:56:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1272. [2023-12-02 13:56:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 762 states have (on average 1.7244094488188977) internal successors, (1314), 1265 states have internal predecessors, (1314), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 13:56:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 2323 transitions. [2023-12-02 13:56:48,394 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 2323 transitions. Word has length 126 [2023-12-02 13:56:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:48,395 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 2323 transitions. [2023-12-02 13:56:48,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 2323 transitions. [2023-12-02 13:56:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:56:48,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:48,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:48,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 13:56:48,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 13:56:48,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:56:48,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:48,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash -813353329, now seen corresponding path program 1 times [2023-12-02 13:56:48,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:48,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352805531] [2023-12-02 13:56:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:48,800 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 [2023-12-02 13:56:48,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:48,800 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:48,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 13:56:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:49,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:49,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:56:49,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:49,444 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:49,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352805531] [2023-12-02 13:56:49,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352805531] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:49,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1569918614] [2023-12-02 13:56:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:49,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:56:49,445 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:56:49,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 13:56:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:50,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:50,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:56:50,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:56:50,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1569918614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:56:50,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:56:50,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 13:56:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030809836] [2023-12-02 13:56:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:56:50,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:56:50,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:56:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:56:50,212 INFO L87 Difference]: Start difference. First operand 1272 states and 2323 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:50,344 INFO L93 Difference]: Finished difference Result 1256 states and 2296 transitions. [2023-12-02 13:56:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:56:50,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 126 [2023-12-02 13:56:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:50,349 INFO L225 Difference]: With dead ends: 1256 [2023-12-02 13:56:50,349 INFO L226 Difference]: Without dead ends: 1256 [2023-12-02 13:56:50,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:56:50,350 INFO L413 NwaCegarLoop]: 2207 mSDtfsCounter, 39 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6603 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:50,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6603 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:56:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2023-12-02 13:56:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1255. [2023-12-02 13:56:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 745 states have (on average 1.7261744966442953) internal successors, (1286), 1248 states have internal predecessors, (1286), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 13:56:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 2295 transitions. [2023-12-02 13:56:50,507 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 2295 transitions. Word has length 126 [2023-12-02 13:56:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:50,507 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 2295 transitions. [2023-12-02 13:56:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:56:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 2295 transitions. [2023-12-02 13:56:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:56:50,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:50,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:50,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 13:56:50,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 13:56:50,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:50,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:50,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1210582849, now seen corresponding path program 1 times [2023-12-02 13:56:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:50,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477865481] [2023-12-02 13:56:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:50,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:56:50,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:50,911 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:50,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 13:56:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:51,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:51,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:56:51,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:51,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:51,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477865481] [2023-12-02 13:56:51,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477865481] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:51,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [556009454] [2023-12-02 13:56:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:51,542 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:51,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:56:51,543 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:56:51,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 13:56:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:52,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:52,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:56:52,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:52,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [556009454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:52,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871619633] [2023-12-02 13:56:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:56:52,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:56:52,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:56:52,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:56:52,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 13:56:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:56:53,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:56:53,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:53,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:56:53,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871619633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:53,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:56:53,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 13:56:53,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778471949] [2023-12-02 13:56:53,277 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:56:53,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:56:53,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:56:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:56:53,279 INFO L87 Difference]: Start difference. First operand 1255 states and 2295 transitions. Second operand has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:56:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:53,686 INFO L93 Difference]: Finished difference Result 1267 states and 2314 transitions. [2023-12-02 13:56:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 13:56:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2023-12-02 13:56:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:53,692 INFO L225 Difference]: With dead ends: 1267 [2023-12-02 13:56:53,692 INFO L226 Difference]: Without dead ends: 1267 [2023-12-02 13:56:53,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 13:56:53,693 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 16 mSDsluCounter, 11106 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13331 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:53,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 13331 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:56:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2023-12-02 13:56:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265. [2023-12-02 13:56:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 754 states have (on average 1.7281167108753315) internal successors, (1303), 1257 states have internal predecessors, (1303), 505 states have call successors, (505), 4 states have call predecessors, (505), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 13:56:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 2312 transitions. [2023-12-02 13:56:53,857 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 2312 transitions. Word has length 126 [2023-12-02 13:56:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:53,857 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 2312 transitions. [2023-12-02 13:56:53,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:56:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 2312 transitions. [2023-12-02 13:56:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 13:56:53,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:53,859 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:53,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-02 13:56:54,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 13:56:54,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 13:56:54,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:56:54,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:54,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash -363150971, now seen corresponding path program 2 times [2023-12-02 13:56:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:54,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076696511] [2023-12-02 13:56:54,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:56:54,462 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 [2023-12-02 13:56:54,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:54,463 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:54,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 13:56:55,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:56:55,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:56:55,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:56:55,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:56:55,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:56:55,384 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:56:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076696511] [2023-12-02 13:56:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076696511] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1654253538] [2023-12-02 13:56:55,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:56:55,385 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:55,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:56:55,386 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:56:55,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 13:56:56,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:56:56,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:56:56,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:56:56,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:56:56,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:56:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1654253538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068401510] [2023-12-02 13:56:56,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:56:56,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:56:56,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:56:56,773 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:56:56,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 13:56:57,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:56:57,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:56:57,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:56:57,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:56:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:56:57,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:56:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:56:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068401510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:56:57,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:56:57,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 13:56:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101576480] [2023-12-02 13:56:57,752 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:56:57,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 13:56:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:56:57,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 13:56:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 13:56:57,754 INFO L87 Difference]: Start difference. First operand 1265 states and 2312 transitions. Second operand has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:56:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:56:58,707 INFO L93 Difference]: Finished difference Result 1278 states and 2329 transitions. [2023-12-02 13:56:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 13:56:58,707 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-02 13:56:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:56:58,712 INFO L225 Difference]: With dead ends: 1278 [2023-12-02 13:56:58,712 INFO L226 Difference]: Without dead ends: 1275 [2023-12-02 13:56:58,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 13:56:58,714 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 14 mSDsluCounter, 19993 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 22218 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:56:58,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 22218 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:56:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-12-02 13:56:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1272. [2023-12-02 13:56:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 761 states have (on average 1.721419185282523) internal successors, (1310), 1264 states have internal predecessors, (1310), 505 states have call successors, (505), 4 states have call predecessors, (505), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 13:56:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 2319 transitions. [2023-12-02 13:56:58,883 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 2319 transitions. Word has length 132 [2023-12-02 13:56:58,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:56:58,884 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 2319 transitions. [2023-12-02 13:56:58,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:56:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 2319 transitions. [2023-12-02 13:56:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 13:56:58,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:56:58,886 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:56:58,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-02 13:56:59,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 13:56:59,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 13:56:59,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:56:59,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:56:59,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:56:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2034815548, now seen corresponding path program 3 times [2023-12-02 13:56:59,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:56:59,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590348836] [2023-12-02 13:56:59,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:56:59,488 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 [2023-12-02 13:56:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:56:59,489 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 13:56:59,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 13:57:02,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 13:57:02,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:57:02,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:57:02,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:57:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:57:02,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:57:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:57:02,653 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:57:02,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590348836] [2023-12-02 13:57:02,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590348836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:57:02,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1375493887] [2023-12-02 13:57:02,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:57:02,654 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:57:02,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:57:02,655 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:57:02,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 13:59:24,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 13:59:24,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:59:24,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:59:24,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:59:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:59:24,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:59:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:59:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1375493887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:59:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040974690] [2023-12-02 13:59:24,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:59:24,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:59:24,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:59:24,961 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:59:24,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70f8123-ad0c-462b-9252-4a8c0cf532c5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process