./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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_76f75248-d178-4fbf-b154-ec459db165db/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 c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:58:47,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:58:47,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 12:58:47,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:58:47,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:58:47,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:58:47,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:58:47,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:58:47,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:58:47,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:58:47,326 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:58:47,326 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:58:47,327 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:58:47,327 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:58:47,328 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:58:47,328 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:58:47,329 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:58:47,329 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:58:47,330 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:58:47,330 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:58:47,331 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:58:47,332 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:58:47,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 12:58:47,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 12:58:47,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:58:47,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:58:47,334 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:58:47,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:58:47,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:58:47,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:58:47,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:58:47,336 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 12:58:47,336 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 12:58:47,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:58:47,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:58:47,337 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:58:47,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:58:47,337 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:58:47,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:58:47,338 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:58:47,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:58:47,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:58:47,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:58:47,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:58:47,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:58:47,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:58:47,339 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:58:47,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:58:47,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:58:47,340 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:58:47,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:58:47,340 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_76f75248-d178-4fbf-b154-ec459db165db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2023-12-02 12:58:47,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:58:47,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:58:47,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:58:47,589 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:58:47,589 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:58:47,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2023-12-02 12:58:50,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:58:50,589 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:58:50,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2023-12-02 12:58:50,608 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data/4d92803b2/cc7ac6205c5d4717af3f628aca27d3a8/FLAG51f21629b [2023-12-02 12:58:50,620 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data/4d92803b2/cc7ac6205c5d4717af3f628aca27d3a8 [2023-12-02 12:58:50,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:58:50,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:58:50,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:58:50,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:58:50,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:58:50,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:50" (1/1) ... [2023-12-02 12:58:50,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137dc83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:50, skipping insertion in model container [2023-12-02 12:58:50,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:50" (1/1) ... [2023-12-02 12:58:50,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:58:51,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:58:51,163 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 12:58:51,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7864420f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:51, skipping insertion in model container [2023-12-02 12:58:51,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:58:51,164 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 12:58:51,166 INFO L158 Benchmark]: Toolchain (without parser) took 542.49ms. Allocated memory is still 188.7MB. Free memory was 151.6MB in the beginning and 141.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 12:58:51,167 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:58:51,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.34ms. Allocated memory is still 188.7MB. Free memory was 151.4MB in the beginning and 141.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 12:58:51,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.34ms. Allocated memory is still 188.7MB. Free memory was 151.4MB in the beginning and 141.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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_76f75248-d178-4fbf-b154-ec459db165db/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 c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:58:52,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:58:52,998 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 12:58:53,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:58:53,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:58:53,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:58:53,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:58:53,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:58:53,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:58:53,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:58:53,036 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:58:53,037 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:58:53,037 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:58:53,038 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:58:53,038 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:58:53,039 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:58:53,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 12:58:53,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 12:58:53,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:58:53,041 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:58:53,042 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:58:53,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:58:53,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:58:53,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:58:53,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:58:53,044 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 12:58:53,044 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 12:58:53,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:58:53,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:58:53,046 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:58:53,046 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 12:58:53,046 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 12:58:53,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:58:53,047 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:58:53,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:58:53,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:58:53,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:58:53,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 12:58:53,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:58:53,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:58:53,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:58:53,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:58:53,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:58:53,049 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 12:58:53,050 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 12:58:53,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:58:53,050 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:58:53,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:58:53,050 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_76f75248-d178-4fbf-b154-ec459db165db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2023-12-02 12:58:53,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:58:53,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:58:53,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:58:53,342 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:58:53,342 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:58:53,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2023-12-02 12:58:56,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:58:56,434 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:58:56,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2023-12-02 12:58:56,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data/c6fc69204/6f80c724029c4ac5a685380ee97c224a/FLAG6af4082cc [2023-12-02 12:58:56,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/data/c6fc69204/6f80c724029c4ac5a685380ee97c224a [2023-12-02 12:58:56,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:58:56,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:58:56,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:58:56,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:58:56,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:58:56,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:56" (1/1) ... [2023-12-02 12:58:56,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a712300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:56, skipping insertion in model container [2023-12-02 12:58:56,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:56" (1/1) ... [2023-12-02 12:58:56,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:58:57,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:58:57,058 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 12:58:57,076 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:58:57,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:58:57,164 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:58:57,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:58:57,262 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:58:57,270 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:58:57,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57 WrapperNode [2023-12-02 12:58:57,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:58:57,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:58:57,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:58:57,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:58:57,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,372 INFO L138 Inliner]: procedures = 179, calls = 280, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1002 [2023-12-02 12:58:57,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:58:57,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:58:57,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:58:57,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:58:57,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:58:57,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:58:57,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:58:57,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:58:57,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (1/1) ... [2023-12-02 12:58:57,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:58:57,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:57,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:58:57,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:58:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 12:58:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 12:58:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 12:58:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 12:58:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 12:58:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 12:58:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:58:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:58:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:58:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:58:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 12:58:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:58:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:58:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 12:58:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 12:58:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:58:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:58:57,741 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:58:57,743 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:59:05,263 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:59:05,296 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:59:05,296 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 12:59:05,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:59:05 BoogieIcfgContainer [2023-12-02 12:59:05,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:59:05,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:59:05,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:59:05,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:59:05,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:58:56" (1/3) ... [2023-12-02 12:59:05,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecc9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:59:05, skipping insertion in model container [2023-12-02 12:59:05,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:57" (2/3) ... [2023-12-02 12:59:05,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecc9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:59:05, skipping insertion in model container [2023-12-02 12:59:05,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:59:05" (3/3) ... [2023-12-02 12:59:05,306 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-1.i [2023-12-02 12:59:05,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:59:05,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:59:05,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:59:05,378 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;@402baea0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:59:05,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:59:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 184 states have (on average 1.6793478260869565) internal successors, (309), 187 states have internal predecessors, (309), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:59:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 12:59:05,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:05,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:59:05,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:05,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:05,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1790709612, now seen corresponding path program 1 times [2023-12-02 12:59:05,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734476223] [2023-12-02 12:59:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:05,410 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 12:59:05,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:05,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:05,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:05,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 12:59:05,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:05,658 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 12:59:05,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:05,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734476223] [2023-12-02 12:59:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734476223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:05,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:59:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:59:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080914556] [2023-12-02 12:59:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:05,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:59:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:59:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:59:05,691 INFO L87 Difference]: Start difference. First operand has 194 states, 184 states have (on average 1.6793478260869565) internal successors, (309), 187 states have internal predecessors, (309), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 12:59:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:05,740 INFO L93 Difference]: Finished difference Result 191 states and 246 transitions. [2023-12-02 12:59:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:59:05,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-12-02 12:59:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:05,752 INFO L225 Difference]: With dead ends: 191 [2023-12-02 12:59:05,752 INFO L226 Difference]: Without dead ends: 190 [2023-12-02 12:59:05,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 12:59:05,757 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:05,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:59:05,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-02 12:59:05,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-12-02 12:59:05,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 182 states have (on average 1.3021978021978022) internal successors, (237), 184 states have internal predecessors, (237), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:59:05,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 245 transitions. [2023-12-02 12:59:05,807 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 245 transitions. Word has length 8 [2023-12-02 12:59:05,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:05,807 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 245 transitions. [2023-12-02 12:59:05,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 12:59:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 245 transitions. [2023-12-02 12:59:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 12:59:05,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:05,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:59:05,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:06,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:06,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:06,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:06,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1125738730, now seen corresponding path program 1 times [2023-12-02 12:59:06,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:06,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492451619] [2023-12-02 12:59:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:06,013 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 12:59:06,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:06,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:06,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:06,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:06,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:06,254 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 12:59:06,255 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 12:59:06,256 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 12:59:06,266 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 12:59:06,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 12:59:06,351 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 12:59:06,371 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 12:59:06,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:06,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:06,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492451619] [2023-12-02 12:59:06,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492451619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:06,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:59:06,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:59:06,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427295239] [2023-12-02 12:59:06,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:06,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:59:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:59:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:59:06,375 INFO L87 Difference]: Start difference. First operand 190 states and 245 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:59:10,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:13,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:14,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:14,723 INFO L93 Difference]: Finished difference Result 312 states and 406 transitions. [2023-12-02 12:59:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:59:14,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 12:59:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:14,728 INFO L225 Difference]: With dead ends: 312 [2023-12-02 12:59:14,728 INFO L226 Difference]: Without dead ends: 312 [2023-12-02 12:59:14,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 12:59:14,730 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 151 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:14,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 590 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2023-12-02 12:59:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-02 12:59:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 192. [2023-12-02 12:59:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 184 states have (on average 1.298913043478261) internal successors, (239), 186 states have internal predecessors, (239), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:59:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 247 transitions. [2023-12-02 12:59:14,748 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 247 transitions. Word has length 10 [2023-12-02 12:59:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:14,748 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 247 transitions. [2023-12-02 12:59:14,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:59:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 247 transitions. [2023-12-02 12:59:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 12:59:14,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:14,752 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 12:59:14,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:14,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:14,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:14,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1539321756, now seen corresponding path program 1 times [2023-12-02 12:59:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081395465] [2023-12-02 12:59:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:14,954 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 12:59:14,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:14,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:14,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:15,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:59:15,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:59:15,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:15,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:15,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081395465] [2023-12-02 12:59:15,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081395465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:15,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:59:15,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:59:15,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145840135] [2023-12-02 12:59:15,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:15,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:59:15,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:59:15,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:59:15,350 INFO L87 Difference]: Start difference. First operand 192 states and 247 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 12:59:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:15,497 INFO L93 Difference]: Finished difference Result 196 states and 243 transitions. [2023-12-02 12:59:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:59:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2023-12-02 12:59:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:15,499 INFO L225 Difference]: With dead ends: 196 [2023-12-02 12:59:15,499 INFO L226 Difference]: Without dead ends: 196 [2023-12-02 12:59:15,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 12:59:15,501 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 36 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:15,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 618 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:59:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-02 12:59:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2023-12-02 12:59:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.2513368983957218) internal successors, (234), 189 states have internal predecessors, (234), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:59:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 242 transitions. [2023-12-02 12:59:15,515 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 242 transitions. Word has length 66 [2023-12-02 12:59:15,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:15,515 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 242 transitions. [2023-12-02 12:59:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 12:59:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 242 transitions. [2023-12-02 12:59:15,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 12:59:15,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:15,518 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 12:59:15,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:15,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:15,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:15,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash -891917808, now seen corresponding path program 1 times [2023-12-02 12:59:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:15,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534981703] [2023-12-02 12:59:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:15,722 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 12:59:15,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:15,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:15,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:16,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:59:16,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:59:16,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:16,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534981703] [2023-12-02 12:59:16,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534981703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:16,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:59:16,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:59:16,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371831008] [2023-12-02 12:59:16,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:59:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:59:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:59:16,432 INFO L87 Difference]: Start difference. First operand 195 states and 242 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 12:59:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:17,272 INFO L93 Difference]: Finished difference Result 311 states and 384 transitions. [2023-12-02 12:59:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:59:17,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2023-12-02 12:59:17,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:17,275 INFO L225 Difference]: With dead ends: 311 [2023-12-02 12:59:17,275 INFO L226 Difference]: Without dead ends: 311 [2023-12-02 12:59:17,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 12:59:17,276 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 102 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:17,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 481 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 12:59:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-02 12:59:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 303. [2023-12-02 12:59:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 295 states have (on average 1.2474576271186442) internal successors, (368), 297 states have internal predecessors, (368), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:59:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 376 transitions. [2023-12-02 12:59:17,291 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 376 transitions. Word has length 66 [2023-12-02 12:59:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:17,292 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 376 transitions. [2023-12-02 12:59:17,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 12:59:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 376 transitions. [2023-12-02 12:59:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 12:59:17,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:17,296 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] [2023-12-02 12:59:17,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:17,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:17,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:17,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:17,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1833383307, now seen corresponding path program 1 times [2023-12-02 12:59:17,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:17,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116301356] [2023-12-02 12:59:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:17,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 12:59:17,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:17,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:17,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:17,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:59:17,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:17,990 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 12:59:17,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:17,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:17,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116301356] [2023-12-02 12:59:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116301356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:17,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:59:17,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:59:17,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129318026] [2023-12-02 12:59:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:17,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:59:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:17,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:59:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:59:17,994 INFO L87 Difference]: Start difference. First operand 303 states and 376 transitions. Second operand has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 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 12:59:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:18,079 INFO L93 Difference]: Finished difference Result 305 states and 379 transitions. [2023-12-02 12:59:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:59:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 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 79 [2023-12-02 12:59:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:18,083 INFO L225 Difference]: With dead ends: 305 [2023-12-02 12:59:18,083 INFO L226 Difference]: Without dead ends: 305 [2023-12-02 12:59:18,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 12:59:18,084 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:18,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 686 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:59:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-02 12:59:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-12-02 12:59:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 296 states have (on average 1.25) internal successors, (370), 299 states have internal predecessors, (370), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 379 transitions. [2023-12-02 12:59:18,097 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 379 transitions. Word has length 79 [2023-12-02 12:59:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:18,097 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 379 transitions. [2023-12-02 12:59:18,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 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 12:59:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 379 transitions. [2023-12-02 12:59:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 12:59:18,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:18,100 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] [2023-12-02 12:59:18,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:18,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:18,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:18,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:18,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1411599707, now seen corresponding path program 1 times [2023-12-02 12:59:18,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:18,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201258787] [2023-12-02 12:59:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:18,302 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 12:59:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:18,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:18,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:18,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:18,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:18,855 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 12:59:18,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:18,950 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 12:59:18,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:18,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201258787] [2023-12-02 12:59:18,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201258787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:18,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1102572037] [2023-12-02 12:59:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:18,951 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:59:18,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:59:18,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:59:18,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 12:59:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:19,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:19,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:19,692 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 12:59:19,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1102572037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:59:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 12:59:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269508064] [2023-12-02 12:59:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:19,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:59:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:59:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 12:59:19,694 INFO L87 Difference]: Start difference. First operand 305 states and 379 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 12:59:22,294 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 12:59:24,302 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 12:59:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:27,366 INFO L93 Difference]: Finished difference Result 393 states and 494 transitions. [2023-12-02 12:59:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:59:27,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 12:59:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:27,370 INFO L225 Difference]: With dead ends: 393 [2023-12-02 12:59:27,370 INFO L226 Difference]: Without dead ends: 393 [2023-12-02 12:59:27,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 233 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 12:59:27,371 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 465 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:27,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 393 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 12:59:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-02 12:59:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 390. [2023-12-02 12:59:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 381 states have (on average 1.2650918635170603) internal successors, (482), 384 states have internal predecessors, (482), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 491 transitions. [2023-12-02 12:59:27,385 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 491 transitions. Word has length 81 [2023-12-02 12:59:27,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:27,385 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 491 transitions. [2023-12-02 12:59:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 12:59:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 491 transitions. [2023-12-02 12:59:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 12:59:27,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:27,387 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] [2023-12-02 12:59:27,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:27,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 12:59:27,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 12:59:27,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:27,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash 809965609, now seen corresponding path program 1 times [2023-12-02 12:59:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:27,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022499621] [2023-12-02 12:59:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:27,791 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 12:59:27,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:27,792 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:27,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:28,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:28,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:28,285 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 12:59:28,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:28,359 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 12:59:28,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:28,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022499621] [2023-12-02 12:59:28,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022499621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:28,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537205794] [2023-12-02 12:59:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:28,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:59:28,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:59:28,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:59:28,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 12:59:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:29,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:29,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:29,138 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 12:59:29,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:29,185 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 12:59:29,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537205794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:29,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044481897] [2023-12-02 12:59:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:29,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:29,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:59:29,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:59:29,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 12:59:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:29,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:29,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:29,660 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 12:59:29,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:29,749 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 12:59:29,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044481897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:29,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:59:29,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 12:59:29,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105526790] [2023-12-02 12:59:29,750 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:59:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 12:59:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 12:59:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 12:59:29,752 INFO L87 Difference]: Start difference. First operand 390 states and 491 transitions. Second operand has 11 states, 8 states have (on average 11.0) internal successors, (88), 11 states have internal predecessors, (88), 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 12:59:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:30,133 INFO L93 Difference]: Finished difference Result 402 states and 510 transitions. [2023-12-02 12:59:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 12:59:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 11.0) internal successors, (88), 11 states have internal predecessors, (88), 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 82 [2023-12-02 12:59:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:30,136 INFO L225 Difference]: With dead ends: 402 [2023-12-02 12:59:30,136 INFO L226 Difference]: Without dead ends: 402 [2023-12-02 12:59:30,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:59:30,137 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 17 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:30,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1355 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:59:30,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-02 12:59:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2023-12-02 12:59:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 390 states have (on average 1.2794871794871794) internal successors, (499), 393 states have internal predecessors, (499), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 508 transitions. [2023-12-02 12:59:30,152 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 508 transitions. Word has length 82 [2023-12-02 12:59:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:30,153 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 508 transitions. [2023-12-02 12:59:30,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 11.0) internal successors, (88), 11 states have internal predecessors, (88), 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 12:59:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 508 transitions. [2023-12-02 12:59:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:59:30,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:30,154 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] [2023-12-02 12:59:30,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 12:59:30,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 12:59:30,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:30,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:30,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:30,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash -223932295, now seen corresponding path program 2 times [2023-12-02 12:59:30,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:30,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372182527] [2023-12-02 12:59:30,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:59:30,756 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 12:59:30,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:30,757 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:30,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:31,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:59:31,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:59:31,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:59:31,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:31,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 12:59:31,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 12:59:31,059 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 33 treesize of output 31 [2023-12-02 12:59:31,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 12:59:31,096 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 62 treesize of output 22 [2023-12-02 12:59:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 12:59:31,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:31,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:31,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372182527] [2023-12-02 12:59:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372182527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:31,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:59:31,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:59:31,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670816003] [2023-12-02 12:59:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:59:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:59:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:59:31,124 INFO L87 Difference]: Start difference. First operand 400 states and 508 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 12:59:34,083 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 12:59:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:36,974 INFO L93 Difference]: Finished difference Result 478 states and 610 transitions. [2023-12-02 12:59:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:59:36,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 88 [2023-12-02 12:59:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:36,978 INFO L225 Difference]: With dead ends: 478 [2023-12-02 12:59:36,978 INFO L226 Difference]: Without dead ends: 478 [2023-12-02 12:59:36,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 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 12:59:36,979 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 99 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:36,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 594 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 12:59:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-02 12:59:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 402. [2023-12-02 12:59:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 392 states have (on average 1.278061224489796) internal successors, (501), 395 states have internal predecessors, (501), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 510 transitions. [2023-12-02 12:59:36,987 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 510 transitions. Word has length 88 [2023-12-02 12:59:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:36,988 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 510 transitions. [2023-12-02 12:59:36,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 12:59:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 510 transitions. [2023-12-02 12:59:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 12:59:36,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:36,990 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 12:59:36,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:37,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:37,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:37,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1135715633, now seen corresponding path program 1 times [2023-12-02 12:59:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888468157] [2023-12-02 12:59:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:37,192 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 12:59:37,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:37,192 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:37,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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)] Waiting until timeout for monitored process [2023-12-02 12:59:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:37,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:59:37,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:37,799 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 12:59:37,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:37,996 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 12:59:37,996 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888468157] [2023-12-02 12:59:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888468157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1722070105] [2023-12-02 12:59:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:37,997 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:59:37,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:59:37,998 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:59:37,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 12:59:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:38,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:59:38,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 12:59:38,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:38,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1722070105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:38,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:59:38,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 15 [2023-12-02 12:59:38,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523629596] [2023-12-02 12:59:38,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:38,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:59:38,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:38,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:59:38,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-02 12:59:38,749 INFO L87 Difference]: Start difference. First operand 402 states and 510 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 12:59:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:38,854 INFO L93 Difference]: Finished difference Result 465 states and 573 transitions. [2023-12-02 12:59:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:59:38,855 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 132 [2023-12-02 12:59:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:38,858 INFO L225 Difference]: With dead ends: 465 [2023-12-02 12:59:38,858 INFO L226 Difference]: Without dead ends: 465 [2023-12-02 12:59:38,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-02 12:59:38,859 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 8 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:38,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 410 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:59:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-02 12:59:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 462. [2023-12-02 12:59:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 452 states have (on average 1.241150442477876) internal successors, (561), 455 states have internal predecessors, (561), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 570 transitions. [2023-12-02 12:59:38,874 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 570 transitions. Word has length 132 [2023-12-02 12:59:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:38,874 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 570 transitions. [2023-12-02 12:59:38,875 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 12:59:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 570 transitions. [2023-12-02 12:59:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 12:59:38,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:38,877 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 12:59:38,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 12:59:39,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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)] Forceful destruction successful, exit code 0 [2023-12-02 12:59:39,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:39,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:39,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1995878859, now seen corresponding path program 1 times [2023-12-02 12:59:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:39,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951140059] [2023-12-02 12:59:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:39,279 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 12:59:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:39,279 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:39,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:39,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:59:39,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:39,986 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 12:59:39,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:40,188 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 12:59:40,188 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:40,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951140059] [2023-12-02 12:59:40,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951140059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:40,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1312871999] [2023-12-02 12:59:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:40,189 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:59:40,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:59:40,190 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:59:40,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 12:59:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:40,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:40,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 12:59:40,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:59:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1312871999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:40,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:59:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-12-02 12:59:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697610988] [2023-12-02 12:59:40,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:59:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:59:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:59:40,881 INFO L87 Difference]: Start difference. First operand 462 states and 570 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 12:59:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:40,991 INFO L93 Difference]: Finished difference Result 414 states and 489 transitions. [2023-12-02 12:59:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:59:40,991 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 132 [2023-12-02 12:59:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:40,993 INFO L225 Difference]: With dead ends: 414 [2023-12-02 12:59:40,993 INFO L226 Difference]: Without dead ends: 414 [2023-12-02 12:59:40,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-02 12:59:40,994 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 39 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:40,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 582 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:59:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-02 12:59:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2023-12-02 12:59:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 401 states have (on average 1.1895261845386533) internal successors, (477), 404 states have internal predecessors, (477), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 486 transitions. [2023-12-02 12:59:41,003 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 486 transitions. Word has length 132 [2023-12-02 12:59:41,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:41,003 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 486 transitions. [2023-12-02 12:59:41,003 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 12:59:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 486 transitions. [2023-12-02 12:59:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 12:59:41,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:41,005 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 12:59:41,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 12:59:41,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:41,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:41,406 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:41,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:41,406 INFO L85 PathProgramCache]: Analyzing trace with hash 28057319, now seen corresponding path program 1 times [2023-12-02 12:59:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776145443] [2023-12-02 12:59:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:41,407 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 12:59:41,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:41,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:41,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:41,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:59:41,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:42,061 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 12:59:42,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:42,304 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 12:59:42,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776145443] [2023-12-02 12:59:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776145443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [436272967] [2023-12-02 12:59:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:42,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:59:42,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:59:42,306 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:59:42,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 12:59:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:43,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:59:43,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:43,223 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 12:59:43,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:43,291 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 12:59:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [436272967] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504707703] [2023-12-02 12:59:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:43,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:43,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:59:43,292 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:59:43,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 12:59:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:43,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 12:59:43,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 12:59:44,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 12:59:44,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504707703] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:44,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:59:44,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 22 [2023-12-02 12:59:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195495880] [2023-12-02 12:59:44,291 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:59:44,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:59:44,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:59:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:59:44,293 INFO L87 Difference]: Start difference. First operand 411 states and 486 transitions. Second operand has 22 states, 18 states have (on average 7.944444444444445) internal successors, (143), 22 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:59:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:45,569 INFO L93 Difference]: Finished difference Result 430 states and 514 transitions. [2023-12-02 12:59:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 12:59:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.944444444444445) internal successors, (143), 22 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-02 12:59:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:45,572 INFO L225 Difference]: With dead ends: 430 [2023-12-02 12:59:45,572 INFO L226 Difference]: Without dead ends: 427 [2023-12-02 12:59:45,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=678, Invalid=1674, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 12:59:45,573 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 36 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:45,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2354 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:59:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-02 12:59:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2023-12-02 12:59:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 413 states have (on average 1.1961259079903148) internal successors, (494), 416 states have internal predecessors, (494), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 503 transitions. [2023-12-02 12:59:45,583 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 503 transitions. Word has length 132 [2023-12-02 12:59:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:45,583 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 503 transitions. [2023-12-02 12:59:45,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.944444444444445) internal successors, (143), 22 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:59:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 503 transitions. [2023-12-02 12:59:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 12:59:45,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:45,585 INFO L195 NwaCegarLoop]: trace histogram [20, 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 12:59:45,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 12:59:45,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 12:59:45,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:46,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:46,188 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:46,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash 556979879, now seen corresponding path program 2 times [2023-12-02 12:59:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486188358] [2023-12-02 12:59:46,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:59:46,189 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 12:59:46,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:46,190 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:46,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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)] Waiting until timeout for monitored process [2023-12-02 12:59:46,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:59:46,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:59:46,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 12:59:46,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 125 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 12:59:47,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 2 proven. 177 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 12:59:47,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:59:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486188358] [2023-12-02 12:59:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486188358] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [705460087] [2023-12-02 12:59:47,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:59:47,649 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:59:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:59:47,650 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:59:47,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 12:59:48,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:59:48,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:59:48,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 12:59:48,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 125 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 12:59:49,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 2 proven. 177 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 12:59:49,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [705460087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:49,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985658899] [2023-12-02 12:59:49,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:59:49,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:49,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:59:49,149 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:59:49,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 12:59:49,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 12:59:49,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:59:49,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:59:49,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 124 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 12:59:50,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 124 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 12:59:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985658899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:50,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:59:50,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 40 [2023-12-02 12:59:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007477633] [2023-12-02 12:59:50,898 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:59:50,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-02 12:59:50,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:59:50,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-02 12:59:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:59:50,900 INFO L87 Difference]: Start difference. First operand 423 states and 503 transitions. Second operand has 40 states, 36 states have (on average 4.472222222222222) internal successors, (161), 40 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:59:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:55,265 INFO L93 Difference]: Finished difference Result 459 states and 560 transitions. [2023-12-02 12:59:55,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-02 12:59:55,266 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.472222222222222) internal successors, (161), 40 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2023-12-02 12:59:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:55,268 INFO L225 Difference]: With dead ends: 459 [2023-12-02 12:59:55,268 INFO L226 Difference]: Without dead ends: 456 [2023-12-02 12:59:55,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2454, Invalid=6666, Unknown=0, NotChecked=0, Total=9120 [2023-12-02 12:59:55,271 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 63 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:55,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4908 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 12:59:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-02 12:59:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 447. [2023-12-02 12:59:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 437 states have (on average 1.2105263157894737) internal successors, (529), 440 states have internal predecessors, (529), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:59:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 538 transitions. [2023-12-02 12:59:55,281 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 538 transitions. Word has length 144 [2023-12-02 12:59:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:55,281 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 538 transitions. [2023-12-02 12:59:55,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.472222222222222) internal successors, (161), 40 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:59:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 538 transitions. [2023-12-02 12:59:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 12:59:55,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:55,284 INFO L195 NwaCegarLoop]: trace histogram [44, 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 12:59:55,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-02 12:59:55,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 12:59:55,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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)] Ended with exit code 0 [2023-12-02 12:59:55,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:55,886 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 12:59:55,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash -258939353, now seen corresponding path program 3 times [2023-12-02 12:59:55,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:59:55,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396066329] [2023-12-02 12:59:55,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:59:55,887 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 12:59:55,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:59:55,888 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 12:59:55,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/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 (23)] Waiting until timeout for monitored process [2023-12-02 13:00:03,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-02 13:00:03,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:00:03,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 13:00:03,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 532 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 13:00:04,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 532 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 13:00:06,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:06,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396066329] [2023-12-02 13:00:06,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396066329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:06,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1995270231] [2023-12-02 13:00:06,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:00:06,431 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:00:06,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:00:06,432 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:00:06,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f75248-d178-4fbf-b154-ec459db165db/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process