./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.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_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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_8352c2e2-0517-43d7-9790-f8133134fc31/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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:14:46,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:14:46,358 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 17:14:46,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:14:46,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:14:46,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:14:46,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:14:46,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:14:46,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:14:46,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:14:46,394 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:14:46,395 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:14:46,395 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:14:46,396 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:14:46,396 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:14:46,397 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:14:46,397 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:14:46,398 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:14:46,398 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:14:46,399 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:14:46,399 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:14:46,400 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:14:46,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:14:46,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:14:46,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:14:46,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:14:46,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:14:46,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:14:46,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:14:46,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:14:46,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:14:46,405 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:14:46,405 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:14:46,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:14:46,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:14:46,406 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:14:46,407 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:14:46,407 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:14:46,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:14:46,408 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:14:46,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:14:46,408 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:14:46,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:14:46,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:14:46,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:14:46,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:14:46,409 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:14:46,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:14:46,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:14:46,410 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:14:46,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:14:46,410 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_8352c2e2-0517-43d7-9790-f8133134fc31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-12-02 17:14:46,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:14:46,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:14:46,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:14:46,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:14:46,690 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:14:46,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 17:14:49,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:14:49,739 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:14:49,740 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 17:14:49,759 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data/679da7a2e/ac5ab0a3846c411387b50b7f31ead3a4/FLAG34e4570da [2023-12-02 17:14:49,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data/679da7a2e/ac5ab0a3846c411387b50b7f31ead3a4 [2023-12-02 17:14:49,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:14:49,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:14:49,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:14:49,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:14:49,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:14:49,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:49" (1/1) ... [2023-12-02 17:14:49,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e567c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:49, skipping insertion in model container [2023-12-02 17:14:49,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:49" (1/1) ... [2023-12-02 17:14:49,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:14:50,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:14:50,354 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 17:14:50,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@386ffae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:50, skipping insertion in model container [2023-12-02 17:14:50,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:14:50,355 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 17:14:50,357 INFO L158 Benchmark]: Toolchain (without parser) took 577.62ms. Allocated memory is still 146.8MB. Free memory was 100.2MB in the beginning and 79.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:14:50,358 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 146.8MB. Free memory was 119.2MB in the beginning and 119.0MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:14:50,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.04ms. Allocated memory is still 146.8MB. Free memory was 100.2MB in the beginning and 79.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:14:50,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 146.8MB. Free memory was 119.2MB in the beginning and 119.0MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.04ms. Allocated memory is still 146.8MB. Free memory was 100.2MB in the beginning and 79.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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_8352c2e2-0517-43d7-9790-f8133134fc31/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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:14:52,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:14:52,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 17:14:52,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:14:52,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:14:52,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:14:52,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:14:52,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:14:52,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:14:52,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:14:52,207 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:14:52,208 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:14:52,208 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:14:52,209 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:14:52,210 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:14:52,210 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:14:52,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:14:52,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:14:52,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:14:52,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:14:52,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:14:52,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:14:52,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:14:52,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:14:52,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:14:52,216 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:14:52,216 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:14:52,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:14:52,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:14:52,217 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:14:52,218 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:14:52,218 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:14:52,218 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:14:52,219 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:14:52,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:14:52,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:14:52,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:14:52,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:14:52,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:14:52,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:14:52,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:14:52,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:14:52,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:14:52,221 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:14:52,221 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:14:52,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:14:52,222 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:14:52,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:14:52,222 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_8352c2e2-0517-43d7-9790-f8133134fc31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-12-02 17:14:52,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:14:52,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:14:52,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:14:52,515 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:14:52,516 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:14:52,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 17:14:55,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:14:55,614 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:14:55,615 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 17:14:55,632 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data/edd9956f3/588764f9cbae4dfb8ccded2595da9afa/FLAG064ba5c65 [2023-12-02 17:14:55,645 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/data/edd9956f3/588764f9cbae4dfb8ccded2595da9afa [2023-12-02 17:14:55,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:14:55,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:14:55,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:14:55,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:14:55,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:14:55,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:55" (1/1) ... [2023-12-02 17:14:55,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1071439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:55, skipping insertion in model container [2023-12-02 17:14:55,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:55" (1/1) ... [2023-12-02 17:14:55,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:14:56,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:14:56,223 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 17:14:56,235 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:14:56,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:14:56,320 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:14:56,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:14:56,443 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:14:56,449 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:14:56,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56 WrapperNode [2023-12-02 17:14:56,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:14:56,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:14:56,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:14:56,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:14:56,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,546 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1045 [2023-12-02 17:14:56,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:14:56,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:14:56,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:14:56,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:14:56,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:14:56,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:14:56,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:14:56,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:14:56,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (1/1) ... [2023-12-02 17:14:56,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:14:56,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:14:56,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:14:56,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:14:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 17:14:56,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 17:14:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 17:14:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:14:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 17:14:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 17:14:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:14:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 17:14:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:14:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:14:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:14:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:14:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:14:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:14:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:14:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:14:56,930 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:14:56,932 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:15:04,589 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:15:04,637 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:15:04,637 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 17:15:04,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:15:04 BoogieIcfgContainer [2023-12-02 17:15:04,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:15:04,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:15:04,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:15:04,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:15:04,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:14:55" (1/3) ... [2023-12-02 17:15:04,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b711084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:15:04, skipping insertion in model container [2023-12-02 17:15:04,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:56" (2/3) ... [2023-12-02 17:15:04,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b711084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:15:04, skipping insertion in model container [2023-12-02 17:15:04,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:15:04" (3/3) ... [2023-12-02 17:15:04,646 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2023-12-02 17:15:04,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:15:04,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 17:15:04,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:15:04,706 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;@195532c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:15:04,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 17:15:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:15:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:15:04,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:04,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:04,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:04,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash 588329387, now seen corresponding path program 1 times [2023-12-02 17:15:04,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:04,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890913728] [2023-12-02 17:15:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:04,734 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 17:15:04,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:04,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:04,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:04,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 17:15:04,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:04,932 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 17:15:04,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:04,933 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890913728] [2023-12-02 17:15:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890913728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:04,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:15:04,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:15:04,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253241073] [2023-12-02 17:15:04,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:04,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:15:04,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:15:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:15:04,969 INFO L87 Difference]: Start difference. First operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:15:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:05,022 INFO L93 Difference]: Finished difference Result 210 states and 277 transitions. [2023-12-02 17:15:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:15:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 17:15:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:05,035 INFO L225 Difference]: With dead ends: 210 [2023-12-02 17:15:05,035 INFO L226 Difference]: Without dead ends: 209 [2023-12-02 17:15:05,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:15:05,040 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:05,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:15:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-02 17:15:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-12-02 17:15:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 195 states have (on average 1.323076923076923) internal successors, (258), 202 states have internal predecessors, (258), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:15:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 276 transitions. [2023-12-02 17:15:05,092 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 276 transitions. Word has length 10 [2023-12-02 17:15:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:05,093 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 276 transitions. [2023-12-02 17:15:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:15:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 276 transitions. [2023-12-02 17:15:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:15:05,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:05,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:05,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:05,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:05,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:05,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2000743177, now seen corresponding path program 1 times [2023-12-02 17:15:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:05,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305411304] [2023-12-02 17:15:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:05,297 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 17:15:05,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:05,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:05,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:05,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:15:05,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:05,560 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 17:15:05,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:05,561 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:05,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305411304] [2023-12-02 17:15:05,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305411304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:05,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:15:05,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:15:05,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790192393] [2023-12-02 17:15:05,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:05,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:15:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:15:05,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:15:05,566 INFO L87 Difference]: Start difference. First operand 209 states and 276 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:15:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:06,346 INFO L93 Difference]: Finished difference Result 339 states and 452 transitions. [2023-12-02 17:15:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:15:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 17:15:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:06,349 INFO L225 Difference]: With dead ends: 339 [2023-12-02 17:15:06,349 INFO L226 Difference]: Without dead ends: 339 [2023-12-02 17:15:06,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:15:06,351 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 163 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:06,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 499 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 17:15:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-02 17:15:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 308. [2023-12-02 17:15:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.328719723183391) internal successors, (384), 301 states have internal predecessors, (384), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:15:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 412 transitions. [2023-12-02 17:15:06,369 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 412 transitions. Word has length 12 [2023-12-02 17:15:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:06,369 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 412 transitions. [2023-12-02 17:15:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:15:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 412 transitions. [2023-12-02 17:15:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:15:06,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:06,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:06,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:06,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:06,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:06,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2002590219, now seen corresponding path program 1 times [2023-12-02 17:15:06,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:06,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639385365] [2023-12-02 17:15:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:06,573 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 17:15:06,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:06,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:06,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:06,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:15:06,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:06,770 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:15:06,770 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:15:06,771 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:15:06,781 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 17:15:06,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:15:06,874 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 17:15:06,896 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 17:15:06,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:06,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:06,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639385365] [2023-12-02 17:15:06,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639385365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:06,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:15:06,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:15:06,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107371085] [2023-12-02 17:15:06,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:15:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:15:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:15:06,899 INFO L87 Difference]: Start difference. First operand 308 states and 412 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:15:10,972 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 17:15:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:13,315 INFO L93 Difference]: Finished difference Result 419 states and 572 transitions. [2023-12-02 17:15:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:15:13,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 17:15:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:13,319 INFO L225 Difference]: With dead ends: 419 [2023-12-02 17:15:13,319 INFO L226 Difference]: Without dead ends: 419 [2023-12-02 17:15:13,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:15:13,320 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 168 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:13,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 674 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 17:15:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-02 17:15:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 307. [2023-12-02 17:15:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 300 states have internal predecessors, (382), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:15:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 410 transitions. [2023-12-02 17:15:13,344 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 410 transitions. Word has length 12 [2023-12-02 17:15:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:13,345 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 410 transitions. [2023-12-02 17:15:13,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:15:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 410 transitions. [2023-12-02 17:15:13,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 17:15:13,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:13,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:13,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:13,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:13,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash -560959006, now seen corresponding path program 1 times [2023-12-02 17:15:13,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:13,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529689439] [2023-12-02 17:15:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:13,555 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 17:15:13,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:13,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:13,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:14,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:15:14,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:15:14,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:14,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:14,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529689439] [2023-12-02 17:15:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529689439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:14,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:15:14,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:15:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129116740] [2023-12-02 17:15:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:15:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:15:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:15:14,144 INFO L87 Difference]: Start difference. First operand 307 states and 410 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:14,300 INFO L93 Difference]: Finished difference Result 315 states and 402 transitions. [2023-12-02 17:15:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:15:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-12-02 17:15:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:14,304 INFO L225 Difference]: With dead ends: 315 [2023-12-02 17:15:14,304 INFO L226 Difference]: Without dead ends: 315 [2023-12-02 17:15:14,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:15:14,305 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:14,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 705 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:15:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-02 17:15:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2023-12-02 17:15:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 294 states have (on average 1.2653061224489797) internal successors, (372), 306 states have internal predecessors, (372), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:15:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 400 transitions. [2023-12-02 17:15:14,321 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 400 transitions. Word has length 81 [2023-12-02 17:15:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:14,321 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 400 transitions. [2023-12-02 17:15:14,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 400 transitions. [2023-12-02 17:15:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 17:15:14,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:14,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:14,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:14,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:14,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:14,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash -484998930, now seen corresponding path program 1 times [2023-12-02 17:15:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101882504] [2023-12-02 17:15:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:14,535 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 17:15:14,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:14,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:14,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:15,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:15:15,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:15,158 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 17:15:15,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:15,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101882504] [2023-12-02 17:15:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101882504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:15,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:15:15,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:15:15,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722452453] [2023-12-02 17:15:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:15,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:15:15,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:15:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:15:15,161 INFO L87 Difference]: Start difference. First operand 313 states and 400 transitions. Second operand has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:15:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:15,241 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2023-12-02 17:15:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:15:15,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2023-12-02 17:15:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:15,245 INFO L225 Difference]: With dead ends: 315 [2023-12-02 17:15:15,245 INFO L226 Difference]: Without dead ends: 315 [2023-12-02 17:15:15,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:15:15,246 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:15,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 773 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:15:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-02 17:15:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-02 17:15:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 295 states have (on average 1.2677966101694915) internal successors, (374), 308 states have internal predecessors, (374), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 17:15:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 403 transitions. [2023-12-02 17:15:15,260 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 403 transitions. Word has length 81 [2023-12-02 17:15:15,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:15,260 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 403 transitions. [2023-12-02 17:15:15,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:15:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 403 transitions. [2023-12-02 17:15:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 17:15:15,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:15,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:15,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:15,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:15,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:15,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash -933938814, now seen corresponding path program 1 times [2023-12-02 17:15:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:15,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415161907] [2023-12-02 17:15:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:15,469 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 17:15:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:15,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:15,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:15,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:15,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:16,014 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 17:15:16,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:16,126 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 17:15:16,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415161907] [2023-12-02 17:15:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415161907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2116805991] [2023-12-02 17:15:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:16,128 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:15:16,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:15:16,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 17:15:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:16,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:16,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:16,984 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 17:15:16,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:16,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2116805991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:16,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:15:16,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 17:15:16,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825768857] [2023-12-02 17:15:16,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:16,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:15:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:15:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:15:16,987 INFO L87 Difference]: Start difference. First operand 315 states and 403 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:19,489 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 17:15:21,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:15:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:23,333 INFO L93 Difference]: Finished difference Result 328 states and 410 transitions. [2023-12-02 17:15:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:15:23,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-12-02 17:15:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:23,336 INFO L225 Difference]: With dead ends: 328 [2023-12-02 17:15:23,336 INFO L226 Difference]: Without dead ends: 328 [2023-12-02 17:15:23,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:15:23,337 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 432 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:23,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 425 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 17:15:23,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-02 17:15:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2023-12-02 17:15:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 244 states have (on average 1.2336065573770492) internal successors, (301), 252 states have internal predecessors, (301), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 17:15:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions. [2023-12-02 17:15:23,346 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 83 [2023-12-02 17:15:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:23,347 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 320 transitions. [2023-12-02 17:15:23,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions. [2023-12-02 17:15:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 17:15:23,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:23,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:23,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 17:15:23,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:23,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:23,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:23,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1995822790, now seen corresponding path program 1 times [2023-12-02 17:15:23,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:23,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449685301] [2023-12-02 17:15:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:23,752 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 17:15:23,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:23,752 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:23,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:24,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:24,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:15:24,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:15:24,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:24,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449685301] [2023-12-02 17:15:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449685301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1220478860] [2023-12-02 17:15:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:24,362 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:24,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:15:24,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:15:24,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 17:15:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:25,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:25,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:15:25,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:15:25,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1220478860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:25,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160977991] [2023-12-02 17:15:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:15:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:15:25,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:15:25,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:15:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:25,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:15:25,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:15:25,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160977991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:25,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 17:15:25,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-12-02 17:15:25,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861465934] [2023-12-02 17:15:25,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:25,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:15:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:15:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:15:25,873 INFO L87 Difference]: Start difference. First operand 259 states and 320 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:28,389 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 17:15:30,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:15:32,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:15:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:34,333 INFO L93 Difference]: Finished difference Result 261 states and 322 transitions. [2023-12-02 17:15:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:15:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-12-02 17:15:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:34,336 INFO L225 Difference]: With dead ends: 261 [2023-12-02 17:15:34,336 INFO L226 Difference]: Without dead ends: 261 [2023-12-02 17:15:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:15:34,337 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 225 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 469 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 17:15:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-02 17:15:34,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2023-12-02 17:15:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.2326530612244897) internal successors, (302), 253 states have internal predecessors, (302), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 17:15:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2023-12-02 17:15:34,346 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 92 [2023-12-02 17:15:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:34,346 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2023-12-02 17:15:34,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2023-12-02 17:15:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 17:15:34,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:34,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:34,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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)] Forceful destruction successful, exit code 0 [2023-12-02 17:15:34,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 17:15:34,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 17:15:34,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:34,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:34,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1997669832, now seen corresponding path program 1 times [2023-12-02 17:15:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665173420] [2023-12-02 17:15:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:34,950 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 17:15:34,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:34,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:34,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:35,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:35,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:15:35,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:15:35,587 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:35,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665173420] [2023-12-02 17:15:35,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665173420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:35,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [665868354] [2023-12-02 17:15:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:35,587 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:35,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:15:35,588 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:15:35,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 17:15:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:36,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:36,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:15:36,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:15:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [665868354] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067851090] [2023-12-02 17:15:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:36,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:15:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:15:36,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:15:36,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:15:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:37,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:15:37,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:37,012 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:15:37,013 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:15:37,013 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:15:37,015 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 17:15:37,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:15:37,102 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 17:15:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 17:15:37,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067851090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:37,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 17:15:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-12-02 17:15:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302616154] [2023-12-02 17:15:37,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:37,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:15:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:37,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:15:37,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:15:37,131 INFO L87 Difference]: Start difference. First operand 260 states and 321 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:40,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:15:42,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:15:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:43,918 INFO L93 Difference]: Finished difference Result 333 states and 423 transitions. [2023-12-02 17:15:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:15:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-12-02 17:15:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:43,921 INFO L225 Difference]: With dead ends: 333 [2023-12-02 17:15:43,921 INFO L226 Difference]: Without dead ends: 333 [2023-12-02 17:15:43,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:15:43,922 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 129 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:43,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 649 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2023-12-02 17:15:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-02 17:15:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 262. [2023-12-02 17:15:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 247 states have (on average 1.2307692307692308) internal successors, (304), 255 states have internal predecessors, (304), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 17:15:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 323 transitions. [2023-12-02 17:15:43,929 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 323 transitions. Word has length 92 [2023-12-02 17:15:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:43,929 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 323 transitions. [2023-12-02 17:15:43,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:15:43,929 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 323 transitions. [2023-12-02 17:15:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 17:15:43,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:43,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:43,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:44,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:15:44,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 17:15:44,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:44,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:44,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash -768037438, now seen corresponding path program 1 times [2023-12-02 17:15:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354036818] [2023-12-02 17:15:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:44,534 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 17:15:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:44,535 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:44,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:45,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:45,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:45,142 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 17:15:45,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:45,214 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 17:15:45,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:45,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354036818] [2023-12-02 17:15:45,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354036818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:45,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [784125733] [2023-12-02 17:15:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:45,215 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:45,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:15:45,216 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:15:45,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 17:15:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:45,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:15:45,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:15:45,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:45,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [784125733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:45,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:15:45,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 17:15:45,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259806028] [2023-12-02 17:15:45,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:45,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:15:45,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:15:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:15:45,831 INFO L87 Difference]: Start difference. First operand 262 states and 323 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 17:15:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:45,940 INFO L93 Difference]: Finished difference Result 283 states and 344 transitions. [2023-12-02 17:15:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:15:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 126 [2023-12-02 17:15:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:45,943 INFO L225 Difference]: With dead ends: 283 [2023-12-02 17:15:45,943 INFO L226 Difference]: Without dead ends: 283 [2023-12-02 17:15:45,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:15:45,944 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 8 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:45,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 464 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:15:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-02 17:15:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2023-12-02 17:15:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 267 states have (on average 1.2134831460674158) internal successors, (324), 275 states have internal predecessors, (324), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 17:15:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 343 transitions. [2023-12-02 17:15:45,954 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 343 transitions. Word has length 126 [2023-12-02 17:15:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:45,954 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 343 transitions. [2023-12-02 17:15:45,954 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 17:15:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 343 transitions. [2023-12-02 17:15:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 17:15:45,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:45,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:45,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:46,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 17:15:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:46,357 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:46,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash 395335366, now seen corresponding path program 1 times [2023-12-02 17:15:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552968971] [2023-12-02 17:15:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:46,358 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 17:15:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:46,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:46,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:46,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:46,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:46,954 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 17:15:46,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:47,033 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 17:15:47,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552968971] [2023-12-02 17:15:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552968971] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797564307] [2023-12-02 17:15:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:47,033 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:47,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:15:47,034 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:15:47,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 17:15:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:47,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:47,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:15:47,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:15:47,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1797564307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:15:47,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:15:47,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 17:15:47,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906814147] [2023-12-02 17:15:47,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:15:47,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:15:47,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:15:47,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:15:47,820 INFO L87 Difference]: Start difference. First operand 282 states and 343 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 17:15:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:47,950 INFO L93 Difference]: Finished difference Result 266 states and 316 transitions. [2023-12-02 17:15:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:15:47,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 126 [2023-12-02 17:15:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:47,953 INFO L225 Difference]: With dead ends: 266 [2023-12-02 17:15:47,953 INFO L226 Difference]: Without dead ends: 266 [2023-12-02 17:15:47,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:15:47,954 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 39 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:47,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 663 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:15:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-02 17:15:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2023-12-02 17:15:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 250 states have (on average 1.184) internal successors, (296), 258 states have internal predecessors, (296), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 17:15:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 315 transitions. [2023-12-02 17:15:47,962 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 315 transitions. Word has length 126 [2023-12-02 17:15:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:47,963 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 315 transitions. [2023-12-02 17:15:47,963 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 17:15:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 315 transitions. [2023-12-02 17:15:47,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 17:15:47,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:47,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:47,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:48,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 17:15:48,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:48,365 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:48,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:48,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1875695752, now seen corresponding path program 1 times [2023-12-02 17:15:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453971597] [2023-12-02 17:15:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:48,367 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 17:15:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:48,368 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:48,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 17:15:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:48,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:48,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:48,985 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 17:15:48,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:49,079 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 17:15:49,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453971597] [2023-12-02 17:15:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453971597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:49,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [383860437] [2023-12-02 17:15:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:49,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:15:49,081 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:15:49,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 17:15:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:50,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:50,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:50,050 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 17:15:50,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:50,096 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 17:15:50,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [383860437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:50,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578445313] [2023-12-02 17:15:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:15:50,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:15:50,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:15:50,098 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:15:50,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:15:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:15:50,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:15:50,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:50,721 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 17:15:50,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:50,819 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 17:15:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578445313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:50,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:15:50,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 17:15:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887501782] [2023-12-02 17:15:50,820 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:15:50,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:15:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:15:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:15:50,823 INFO L87 Difference]: Start difference. First operand 265 states and 315 transitions. Second operand has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:15:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:51,202 INFO L93 Difference]: Finished difference Result 277 states and 334 transitions. [2023-12-02 17:15:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:15:51,203 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2023-12-02 17:15:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:51,205 INFO L225 Difference]: With dead ends: 277 [2023-12-02 17:15:51,205 INFO L226 Difference]: Without dead ends: 277 [2023-12-02 17:15:51,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 741 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 17:15:51,206 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 17 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:51,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1448 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:15:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-02 17:15:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2023-12-02 17:15:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 259 states have (on average 1.2084942084942085) internal successors, (313), 267 states have internal predecessors, (313), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 17:15:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 332 transitions. [2023-12-02 17:15:51,214 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 332 transitions. Word has length 126 [2023-12-02 17:15:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:51,214 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 332 transitions. [2023-12-02 17:15:51,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:15:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 332 transitions. [2023-12-02 17:15:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 17:15:51,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:51,216 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 17:15:51,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 17:15:51,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 17:15:51,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 17:15:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:51,817 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:51,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash 86305292, now seen corresponding path program 2 times [2023-12-02 17:15:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:51,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561879936] [2023-12-02 17:15:51,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:15:51,818 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 17:15:51,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:51,819 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:51,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 17:15:52,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:15:52,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:15:52,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:15:52,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:52,580 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 17:15:52,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:52,807 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 17:15:52,807 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:15:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561879936] [2023-12-02 17:15:52,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561879936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [916809475] [2023-12-02 17:15:52,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:15:52,808 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:15:52,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:15:52,809 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:15:52,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 17:15:54,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:15:54,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:15:54,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:15:54,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:54,324 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 17:15:54,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:54,387 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 17:15:54,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [916809475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460665614] [2023-12-02 17:15:54,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:15:54,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:15:54,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:15:54,389 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:15:54,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 17:15:55,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:15:55,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:15:55,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:15:55,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:15:55,239 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 17:15:55,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:15:55,468 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 17:15:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460665614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:15:55,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:15:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 17:15:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887412052] [2023-12-02 17:15:55,469 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:15:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 17:15:55,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:15:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 17:15:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 17:15:55,471 INFO L87 Difference]: Start difference. First operand 275 states and 332 transitions. Second operand has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 17:15:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:15:56,412 INFO L93 Difference]: Finished difference Result 288 states and 349 transitions. [2023-12-02 17:15:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 17:15:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-02 17:15:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:15:56,415 INFO L225 Difference]: With dead ends: 288 [2023-12-02 17:15:56,415 INFO L226 Difference]: Without dead ends: 285 [2023-12-02 17:15:56,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 17:15:56,417 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 14 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:15:56,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1938 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:15:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-02 17:15:56,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2023-12-02 17:15:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 266 states have (on average 1.2030075187969924) internal successors, (320), 274 states have internal predecessors, (320), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 17:15:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 339 transitions. [2023-12-02 17:15:56,426 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 339 transitions. Word has length 132 [2023-12-02 17:15:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:15:56,426 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 339 transitions. [2023-12-02 17:15:56,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 17:15:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 339 transitions. [2023-12-02 17:15:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 17:15:56,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:15:56,428 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:15:56,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 17:15:56,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 17:15:56,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 17:15:57,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:15:57,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:15:57,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:15:57,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1712532701, now seen corresponding path program 3 times [2023-12-02 17:15:57,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:15:57,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046883618] [2023-12-02 17:15:57,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:15:57,030 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 17:15:57,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:15:57,031 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/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 17:15:57,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 17:16:01,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 17:16:01,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:16:01,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:16:01,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 17:16:01,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:16:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 17:16:01,540 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:01,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046883618] [2023-12-02 17:16:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046883618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:16:01,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [662316250] [2023-12-02 17:16:01,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:16:01,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:16:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:16:01,541 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:16:01,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 17:16:32,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 17:16:32,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:16:32,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:16:32,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 17:16:32,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:16:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 17:16:33,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [662316250] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:16:33,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802726444] [2023-12-02 17:16:33,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:16:33,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:16:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:16:33,017 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:16:33,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8352c2e2-0517-43d7-9790-f8133134fc31/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process